diff --git a/backend/geonature/core/gn_meta/models/commons.py b/backend/geonature/core/gn_meta/models/commons.py
index 5b02900c73..ff5e4a30dd 100644
--- a/backend/geonature/core/gn_meta/models/commons.py
+++ b/backend/geonature/core/gn_meta/models/commons.py
@@ -183,6 +183,24 @@ class CorDatasetProtocol(DB.Model):
     id_protocol = DB.Column(DB.Integer, ForeignKey("gn_meta.sinp_datatype_protocols.id_protocol"))
 
 
+cor_dataset_objectif = db.Table(
+    "cor_dataset_objectif",
+    db.Column(
+        "id_dataset",
+        db.Integer,
+        ForeignKey("gn_meta.t_datasets.id_dataset"),
+        primary_key=True,
+    ),
+    db.Column(
+        "id_nomenclature_objectif",
+        db.Integer,
+        ForeignKey(TNomenclatures.id_nomenclature),
+        primary_key=True,
+    ),
+    schema="gn_meta",
+)
+
+
 cor_dataset_territory = db.Table(
     "cor_dataset_territory",
     db.Column(
diff --git a/backend/geonature/core/gn_meta/models/datasets.py b/backend/geonature/core/gn_meta/models/datasets.py
index d6bf0605f2..41aeb0197d 100644
--- a/backend/geonature/core/gn_meta/models/datasets.py
+++ b/backend/geonature/core/gn_meta/models/datasets.py
@@ -50,11 +50,6 @@ class TDatasets(db.Model):
     keywords = DB.Column(DB.Unicode)
     marine_domain = DB.Column(DB.Boolean)
     terrestrial_domain = DB.Column(DB.Boolean)
-    id_nomenclature_dataset_objectif = DB.Column(
-        DB.Integer,
-        ForeignKey("ref_nomenclatures.t_nomenclatures.id_nomenclature"),
-        default=lambda: TNomenclatures.get_default_nomenclature("JDD_OBJECTIFS"),
-    )
     bbox_west = DB.Column(DB.Float)
     bbox_east = DB.Column(DB.Float)
     bbox_south = DB.Column(DB.Float)
@@ -102,10 +97,6 @@ class TDatasets(db.Model):
         TNomenclatures,
         foreign_keys=[id_nomenclature_data_type],
     )
-    nomenclature_dataset_objectif = DB.relationship(
-        TNomenclatures,
-        foreign_keys=[id_nomenclature_dataset_objectif],
-    )
     nomenclature_collecting_method = DB.relationship(
         TNomenclatures,
         foreign_keys=[id_nomenclature_collecting_method],
@@ -123,6 +114,13 @@ class TDatasets(db.Model):
         foreign_keys=[id_nomenclature_resource_type],
     )
 
+    cor_objectifs = DB.relationship(
+        TNomenclatures,
+        secondary=cor_dataset_objectif,
+        # TODO: check what is the use of the following / no reference to "objectif_dataset" needed elsewhere
+        backref=DB.backref("objectif_dataset"),
+    )
+
     cor_territories = DB.relationship(
         TNomenclatures,
         secondary=cor_dataset_territory,
diff --git a/backend/geonature/core/gn_meta/routes.py b/backend/geonature/core/gn_meta/routes.py
index 97bdc05c79..a635d4d85f 100644
--- a/backend/geonature/core/gn_meta/routes.py
+++ b/backend/geonature/core/gn_meta/routes.py
@@ -166,11 +166,11 @@ def get_dataset(scope, id_dataset):
             "cor_dataset_actor.role",
             "modules",
             "nomenclature_data_type",
-            "nomenclature_dataset_objectif",
             "nomenclature_collecting_method",
             "nomenclature_data_origin",
             "nomenclature_source_status",
             "nomenclature_resource_type",
+            "cor_objectifs",
             "cor_territories",
             "acquisition_framework",
             "acquisition_framework.creator",
@@ -384,7 +384,8 @@ def my_csv_resp(filename, data, columns, _header, separator=";"):
 
 def datasetHandler(dataset, data):
     datasetSchema = DatasetSchema(
-        only=["cor_dataset_actor", "modules", "cor_territories"], unknown=EXCLUDE
+        only=["cor_dataset_actor", "modules", "cor_objectifs", "cor_territories"],
+        unknown=EXCLUDE,
     )
     try:
         dataset = datasetSchema.load(data, instance=dataset)
@@ -450,12 +451,12 @@ def get_export_pdf_dataset(id_dataset, scope):
     dataset_schema = DatasetSchema(
         only=[
             "nomenclature_data_type",
-            "nomenclature_dataset_objectif",
             "nomenclature_collecting_method",
             "acquisition_framework",
             "cor_dataset_actor.nomenclature_actor_role",
             "cor_dataset_actor.organism",
             "cor_dataset_actor.role",
+            "cor_objectifs",
         ]
     )
     dataset = dataset_schema.dump(dataset)
diff --git a/backend/geonature/core/gn_meta/schemas.py b/backend/geonature/core/gn_meta/schemas.py
index 81cc1f4ecc..043ed05475 100644
--- a/backend/geonature/core/gn_meta/schemas.py
+++ b/backend/geonature/core/gn_meta/schemas.py
@@ -59,11 +59,11 @@ class Meta:
 
     creator = MA.Nested(UserSchema, dump_only=True)
     nomenclature_data_type = MA.Nested(NomenclatureSchema, dump_only=True)
-    nomenclature_dataset_objectif = MA.Nested(NomenclatureSchema, dump_only=True)
     nomenclature_collecting_method = MA.Nested(NomenclatureSchema, dump_only=True)
     nomenclature_data_origin = MA.Nested(NomenclatureSchema, dump_only=True)
     nomenclature_source_status = MA.Nested(NomenclatureSchema, dump_only=True)
     nomenclature_resource_type = MA.Nested(NomenclatureSchema, dump_only=True)
+    cor_objectifs = MA.Nested(NomenclatureSchema, many=True, unknown=EXCLUDE)
     cor_territories = MA.Nested(NomenclatureSchema, many=True, unknown=EXCLUDE)
     acquisition_framework = MA.Nested("AcquisitionFrameworkSchema", dump_only=True)
     sources = MA.Nested(SourceSchema, many=True, dump_only=True)
diff --git a/backend/geonature/core/gn_synthese/blueprints/synthese.py b/backend/geonature/core/gn_synthese/blueprints/synthese.py
index ef968aa5e8..6e977b61fa 100644
--- a/backend/geonature/core/gn_synthese/blueprints/synthese.py
+++ b/backend/geonature/core/gn_synthese/blueprints/synthese.py
@@ -278,10 +278,13 @@ def get_one_synthese(permissions, id_synthese):
         "dataset.cor_dataset_actor",
         "dataset.cor_dataset_actor.role",
         "dataset.cor_dataset_actor.organism",
+        # TODO: verify if it necessary to have "dataset.cor_objectifs"
+        #   Note: necessary to keep several PyTest tests successful as is
+        #   but does not seem to be used anywhere in the frontend ...
+        # "dataset.cor_objectifs",
         "dataset.cor_territories",
         "dataset.nomenclature_source_status",
         "dataset.nomenclature_resource_type",
-        "dataset.nomenclature_dataset_objectif",
         "dataset.nomenclature_data_type",
         "dataset.nomenclature_data_origin",
         "dataset.nomenclature_collecting_method",
diff --git a/backend/geonature/migrations/versions/ae0b6362fb22_add_table_gn_meta_cor_dataset_obje.py b/backend/geonature/migrations/versions/ae0b6362fb22_add_table_gn_meta_cor_dataset_obje.py
new file mode 100644
index 0000000000..960c3144ea
--- /dev/null
+++ b/backend/geonature/migrations/versions/ae0b6362fb22_add_table_gn_meta_cor_dataset_obje.py
@@ -0,0 +1,181 @@
+"""add table gn_meta.cor_dataset_objectif
+
+Revision ID: ae0b6362fb22
+Revises: cb663f039774
+Create Date: 2026-04-27 12:58:35.383337
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = "ae0b6362fb22"
+down_revision = "cb663f039774"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # TODO: choose whether to add missing comments
+    #   // Check what is made for `cor_acquisition_framework_objectif`, for which ome comments are missing
+
+    # Create "new" table
+    # TODO: determine if, and which, a comment must be added
+    #   // for `cor_acquisition_framework_objectif`:
+    #        """
+    #        A dataset can have 0 or N "objectif(s)". Implement X.Y.Z SINP metadata standard : Objectif du jeu de données, tel que défini par la nomenclature [...] - [OBLIGATOIRE?]
+    #        """
+    # TODO: choose whether to explicit name "pk_cor_dataset_objectif" the PK
+    #   vs. "cor_dataset_objectif_pkey" implied here because not specified
+    #   // we have "pk_cor_acquisition_framework_objectif" for `cor_acquisition_framework_objectif`
+    op.create_table(
+        "cor_dataset_objectif",
+        sa.Column("id_dataset", sa.Integer, primary_key=True),
+        sa.Column("id_nomenclature_objectif", sa.Integer, primary_key=True),
+        schema="gn_meta",
+    )
+    # TODO: verify if onupdate and ondelete actions are actually those wished
+    #   [CASCADE for both for id_dataset, CASCADE for onupdate and NO ACTION for ondelete for objectif] is same as what is defined for cor_acquisition_framework_objectif
+    op.create_foreign_key(
+        "fk_cor_dataset_objectif_id_dataset",
+        source_schema="gn_meta",
+        source_table="cor_dataset_objectif",
+        local_cols=["id_dataset"],
+        referent_schema="gn_meta",
+        referent_table="t_datasets",
+        remote_cols=["id_dataset"],
+        onupdate="CASCADE",
+        ondelete="CASCADE",
+    )
+    op.create_foreign_key(
+        "fk_cor_dataset_objectif_id_nomenclature_objectif",
+        source_schema="gn_meta",
+        source_table="cor_dataset_objectif",
+        local_cols=["id_nomenclature_objectif"],
+        referent_schema="ref_nomenclatures",
+        referent_table="t_nomenclatures",
+        remote_cols=["id_nomenclature"],
+        onupdate="CASCADE",
+        ondelete="NO ACTION",
+    )
+
+    # Add constraint to ensure nomenclature type is "JDD_OBJECTIFS"
+    op.execute(
+        """
+        ALTER TABLE gn_meta.cor_dataset_objectif 
+            ADD CONSTRAINT check_cor_dataset_objectif
+            CHECK (ref_nomenclatures.check_nomenclature_type_by_mnemonique(id_nomenclature_objectif, 'JDD_OBJECTIFS')) NOT VALID;
+        """
+    )
+
+    # Insert data from "old" field - i.e. `gn_meta.t_datasets.id_nomenclature_dataset_objectif` - to "new" table
+    op.execute(
+        """
+        INSERT INTO gn_meta.cor_dataset_objectif (id_dataset, id_nomenclature_objectif)
+        SELECT id_dataset, id_nomenclature_dataset_objectif FROM gn_meta.t_datasets;
+        """
+    )
+
+    # TODO: choose whether to rather keep the "old" field as an archive
+    # Remove "old" field
+    op.drop_column("t_datasets", "id_nomenclature_dataset_objectif", schema="gn_meta")
+
+    # TODO: choose whether to remove following, when no more needed, depending on :
+    #   - Whether we eventually create the archive table in the downgrade ;
+    #   - Whether just here for dev purpose.
+    # If gn_meta.cor_dataset_objectif_archive exists, copy it to gn_meta.cor_dataset_objectif
+    from sqlalchemy.engine.reflection import Inspector
+
+    conn = op.get_bind()
+    inspector = Inspector.from_engine(conn)
+    tables = inspector.get_table_names(schema="gn_meta")
+    if "cor_dataset_objectif_archive" in tables:
+        op.execute(
+            """
+            INSERT INTO gn_meta.cor_dataset_objectif (id_dataset, id_nomenclature_objectif)
+            SELECT id_dataset, id_nomenclature_objectif
+            FROM gn_meta.cor_dataset_objectif_archive
+            WHERE NOT EXISTS (
+                SELECT 1
+                FROM gn_meta.cor_dataset_objectif
+                WHERE id_dataset = gn_meta.cor_dataset_objectif_archive.id_dataset
+                    AND id_nomenclature_objectif = gn_meta.cor_dataset_objectif_archive.id_nomenclature_objectif
+            );
+        """
+        )
+
+    # TODO: remove following if we eventually do not create the archive table in the downgrade
+    # Remove the archive table possibly created through downgrade
+    #   `if_exists=True` to avoid error if table actually does not exist, notably through first upgrade
+    op.drop_table("cor_dataset_objectif_archive", schema="gn_meta", if_exists=True)
+
+
+def downgrade():
+    # TODO: verify if following fully sticks to origin spec for this column - alternatives to verify:
+    #   A. Inspect spec in "backend/geonature/migrations/data/core/meta.sql" // first Alembic rev of branch "geonature"
+    #       > Done > added missing elements below: `server_default`, `COMMENT, `fk_t_datasets_objectif` and `check_t_datasets_objectif`
+    #           TODO: test upgrading and downgrading with the additions
+    #       TODO: verify is sufficient to only check this file, or there other subsequent rev affecting the column spec
+    #   B. Check from a database instanciated from zero but without having a first upgrade of the current rev done
+    # TODO: choose wether to keep this add_column, depending on whether the column is dropped in the upgrade
+    # Create "old" field back
+    op.add_column(
+        "t_datasets",
+        sa.Column(
+            "id_nomenclature_dataset_objectif",
+            sa.Integer,
+            nullable=False,
+            server_default="ref_nomenclatures.get_default_nomenclature_value('JDD_OBJECTIFS')",
+        ),
+        schema="gn_meta",
+    )
+    op.execute(
+        """
+        COMMENT ON COLUMN gn_meta.t_datasets.id_nomenclature_dataset_objectif IS
+        'Correspondance standard SINP = objectifJdd : Objectif du jeu de données tel que défini par la nomenclature ObjectifJeuDonneesValue - OBLIGATOIRE';
+        """
+    )
+    op.execute(
+        """
+        ALTER TABLE ONLY t_datasets
+        ADD CONSTRAINT fk_t_datasets_objectif FOREIGN KEY (id_nomenclature_dataset_objectif) 
+        REFERENCES ref_nomenclatures.t_nomenclatures(id_nomenclature) ON UPDATE CASCADE;
+    """
+    )
+    op.execute(
+        """
+        ALTER TABLE t_datasets
+        ADD CONSTRAINT check_t_datasets_objectif 
+        CHECK (ref_nomenclatures.check_nomenclature_type_by_mnemonique(id_nomenclature_dataset_objectif,'JDD_OBJECTIFS')) NOT VALID;
+    """
+    )
+
+    # TODO: choose whether to keep following:
+    # Make an archive of the "new" table
+    op.execute(
+        """
+        CREATE TABLE gn_meta.cor_dataset_objectif_archive AS TABLE gn_meta.cor_dataset_objectif;
+    """
+    )
+
+    # TODO: choose whether to rather - two alternatives:
+    #   - Prompt the user before end of the downgrade to check: repopulate the "old" field from the "new" table,
+    #       the user would then have to choose which objectif to keep whenever there are strictly more than 1 objectif associated to a dataset
+    #   - Warn the user after the end of the downgrade to check: a posteriori from the archive of the "new" table
+    # Repopulate by arbitrarily picking the first objectif
+    # TODO: decide whether already specified values should be overwritten or not
+    op.execute(
+        """
+        UPDATE gn_meta.t_datasets
+        SET id_nomenclature_dataset_objectif = (
+            SELECT id_nomenclature_objectif
+            FROM gn_meta.cor_dataset_objectif
+            WHERE id_dataset = gn_meta.t_datasets.id_dataset
+            LIMIT 1
+        );
+    """
+    )
+
+    # Remove the "new" table
+    op.drop_table("cor_dataset_objectif", schema="gn_meta")
diff --git a/backend/geonature/templates/acquisition_framework_template_pdf.html b/backend/geonature/templates/acquisition_framework_template_pdf.html
index 809d995d6d..3039000ec8 100644
--- a/backend/geonature/templates/acquisition_framework_template_pdf.html
+++ b/backend/geonature/templates/acquisition_framework_template_pdf.html
@@ -200,8 +200,10 @@
                 <div class="information">
                     <p class="info-titre">Objectifs</p>
                     <p class="info-contenu">
+                        <!-- TODO: decide whether it is indeed 'mnemonique' we wish rather than 'label_default' -->
                         {% for obj in data.cor_objectifs -%}
                         {% if loop.nextitem: %}
+                        <!-- TODO: decide whether to add `<br />` after the `,` below-->
                         {{ obj['mnemonique'] }},
                         {% else %}
                         {{ obj['mnemonique'] }}
diff --git a/backend/geonature/templates/dataset_template_pdf.html b/backend/geonature/templates/dataset_template_pdf.html
index 03bef2e0d4..f1e301d9de 100644
--- a/backend/geonature/templates/dataset_template_pdf.html
+++ b/backend/geonature/templates/dataset_template_pdf.html
@@ -111,12 +111,17 @@ <h5> {{data.title}} </h5>
           </p>
         </div>
 
+        <!-- TODO: decide whether to add a `if data.cor_objectifs:` wrapper / whether to handle improbable case where a dataset has no objectif associated -->
         <div class="information">
-          <p class="info-titre">Objectifs</p>
+          <p class="info-titre">Objectif(s)</p>
           <p class="info-contenu">
-            {% if data.nomenclature_dataset_objectif.label_default: %}
-            {{ data.nomenclature_dataset_objectif.label_default }}
-            {% endif %}
+            {% for obj in data.cor_objectifs -%}
+              {% if loop.nextitem: %}
+                {{ obj['label_default'] }},<br />
+              {% else %}
+                {{ obj['label_default'] }}
+              {% endif %}
+            {%- endfor %}
           </p>
         </div>
 
diff --git a/frontend/src/app/metadataModule/af/af-form.component.html b/frontend/src/app/metadataModule/af/af-form.component.html
index 04052834f9..f0680dfc1f 100644
--- a/frontend/src/app/metadataModule/af/af-form.component.html
+++ b/frontend/src/app/metadataModule/af/af-form.component.html
@@ -78,6 +78,10 @@ <h3>Cadre d'acquisition</h3>
             </select>
           </div>
 
+          <!-- TODO: Verify if `[keyValue]="null"` is necessary, and possibly remove it.
+          Note: it should be useless, and not necessary, since we have `[bindAllItem]="true"` which actually induce `keyValue` to be set to `null`
+            in the ngOnInit of `pnx-nomenclature`
+          -->
           <pnx-nomenclature
             [multiSelect]="true"
             label="Territoires"
@@ -104,6 +108,7 @@ <h3>Cadre d'acquisition</h3>
             ></textarea>
           </div>
 
+          <!-- TODO: Verify if `[keyValue]="null"` is necessary, and possibly remove it.-->
           <pnx-nomenclature
             [multiSelect]="true"
             label="Objectifs du cadre d'acquisition"
@@ -114,6 +119,7 @@ <h3>Cadre d'acquisition</h3>
             data-qa="pnx-metadata-af-form-objectif"
           ></pnx-nomenclature>
 
+          <!-- TODO: Verify if `[keyValue]="null"` is necessary, and possibly remove it.-->
           <pnx-nomenclature
             label="Volets SINP"
             [multiSelect]="true"
diff --git a/frontend/src/app/metadataModule/datasets/dataset-card.component.html b/frontend/src/app/metadataModule/datasets/dataset-card.component.html
index 8726dadbc1..a825c172c0 100644
--- a/frontend/src/app/metadataModule/datasets/dataset-card.component.html
+++ b/frontend/src/app/metadataModule/datasets/dataset-card.component.html
@@ -151,9 +151,12 @@ <h5>{{ 'MetaData.DatasetCard.DescriptiveForm' | translate }}</h5>
           </div>
           <br />
 
-          <div class="b">{{ 'Aims' | translate }}</div>
-          <div class="a">
-            {{ dataset?.nomenclature_dataset_objectif.label_default || 'Non renseigné' }}
+          <div class="b">{{ 'Objective(s)' | translate }}</div>
+          <div
+            *ngFor="let objectif of dataset?.cor_objectifs"
+            class="a"
+          >
+            {{ objectif?.label_default }}
           </div>
           <br />
 
diff --git a/frontend/src/app/metadataModule/datasets/dataset-form.component.html b/frontend/src/app/metadataModule/datasets/dataset-form.component.html
index 7d1b38c755..79770a645a 100644
--- a/frontend/src/app/metadataModule/datasets/dataset-form.component.html
+++ b/frontend/src/app/metadataModule/datasets/dataset-form.component.html
@@ -158,9 +158,11 @@ <h3 class="main-color">{{ 'Dataset' | translate }}</h3>
 
           <div>
             <pnx-nomenclature
-              label="{{ 'Aim' | translate }}"
-              [parentFormControl]="form.get('id_nomenclature_dataset_objectif')"
+              [multiSelect]="true"
+              label="{{ 'Objective(s)' | translate }}"
+              [parentFormControl]="form.get('cor_objectifs')"
               codeNomenclatureType="JDD_OBJECTIFS"
+              [bindAllItem]="true"
               data-qa="pnx-dataset-form-objectif"
             ></pnx-nomenclature>
           </div>
diff --git a/frontend/src/app/metadataModule/services/af-form.service.ts b/frontend/src/app/metadataModule/services/af-form.service.ts
index ad6dd12825..387dfde6ef 100644
--- a/frontend/src/app/metadataModule/services/af-form.service.ts
+++ b/frontend/src/app/metadataModule/services/af-form.service.ts
@@ -42,6 +42,9 @@ export class AcquisitionFrameworkFormService {
         //formate les donnés par défauts envoyées au formulaire
         return {
           is_parent: false,
+          /* TODO: verify if following is necessary or even useful:
+          Note: from a few manual tests with ds form page, it seems useless
+          */
           cor_objectifs: [],
           cor_volets_sinp: [],
           cor_territories: [],
diff --git a/frontend/src/app/metadataModule/services/dataset-form.service.ts b/frontend/src/app/metadataModule/services/dataset-form.service.ts
index 40e5ca68f1..a63ff67d68 100644
--- a/frontend/src/app/metadataModule/services/dataset-form.service.ts
+++ b/frontend/src/app/metadataModule/services/dataset-form.service.ts
@@ -47,6 +47,10 @@ export class DatasetFormService {
           validable: true,
           active: true,
           modules: [],
+          /* TODO: verify if following is necessary or even useful:
+          Note: from a few manual tests with ds form page, it seems useless
+          */
+          cor_objectifs: [],
           cor_territories: [],
           cor_dataset_actor: [{ id_nomenclature_actor_role: id_nomenclature }],
         };
@@ -65,7 +69,6 @@ export class DatasetFormService {
       keywords: null,
       terrestrial_domain: null,
       marine_domain: null,
-      id_nomenclature_dataset_objectif: [null, Validators.required],
       id_nomenclature_collecting_method: [null, Validators.required],
       id_nomenclature_data_origin: [null, Validators.required],
       id_nomenclature_source_status: [null, Validators.required],
@@ -74,6 +77,7 @@ export class DatasetFormService {
       active: [null, Validators.required],
       id_taxa_list: null,
       modules: [[]],
+      cor_objectifs: [[], Validators.required],
       cor_territories: [[], Validators.required],
       cor_dataset_actor: this.fb.array(
         [],
diff --git a/frontend/src/assets/i18n/en.json b/frontend/src/assets/i18n/en.json
index dc833f9cf9..7c8d3d11a4 100644
--- a/frontend/src/assets/i18n/en.json
+++ b/frontend/src/assets/i18n/en.json
@@ -164,8 +164,7 @@
 
   "Advanced": "Advanced",
   "All": "All",
-  "Aim": "Objective",
-  "Aims": "Objectives",
+  "Objective(s)": "Objective(s)",
   "Objectives": "Objectives",
   "Title": "Title",
   "Description": "Description",
diff --git a/frontend/src/assets/i18n/fr.json b/frontend/src/assets/i18n/fr.json
index ed81f9a9f4..93f76620af 100644
--- a/frontend/src/assets/i18n/fr.json
+++ b/frontend/src/assets/i18n/fr.json
@@ -164,8 +164,7 @@
 
   "Advanced": "Avancé",
   "All": "Tous",
-  "Aim": "Objectif",
-  "Aims": "Objectifs",
+  "Objective(s)": "Objectif(s)",
   "Objectives": "Objectifs",
   "Title": "Titre",
   "Description": "Description",