diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6cf2413..b9a22af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to
 
 ### Added
 
+- ✨(organizations) add siret to name conversion #584
 - 💄(frontend) redirect home according to abilities #588
 - ✨(maildomain_access) add API endpoint to search users #508
 
diff --git a/src/backend/core/models.py b/src/backend/core/models.py
index 0e81ac8..a1217c2 100644
--- a/src/backend/core/models.py
+++ b/src/backend/core/models.py
@@ -29,6 +29,7 @@ import jsonschema
 from timezone_field import TimeZoneField
 
 from core.enums import WebhookStatusChoices
+from core.plugins.loader import organization_plugins_run_after_create
 from core.utils.webhooks import scim_synchronizer
 from core.validators import get_field_validators_from_setting
 
@@ -286,6 +287,16 @@ class OrganizationManager(models.Manager):
 
         raise ValueError("Should never reach this point.")
 
+    def create(self, **kwargs):
+        """
+        Create an organization with the given kwargs.
+
+        This method is overridden to call the Organization plugins.
+        """
+        instance = super().create(**kwargs)
+        organization_plugins_run_after_create(instance)
+        return instance
+
 
 class Organization(BaseModel):
     """
diff --git a/src/backend/core/plugins/__init__.py b/src/backend/core/plugins/__init__.py
new file mode 100644
index 0000000..f2c35a9
--- /dev/null
+++ b/src/backend/core/plugins/__init__.py
@@ -0,0 +1 @@
+"""Core plugins package."""
diff --git a/src/backend/core/plugins/base.py b/src/backend/core/plugins/base.py
new file mode 100644
index 0000000..7737eec
--- /dev/null
+++ b/src/backend/core/plugins/base.py
@@ -0,0 +1,13 @@
+"""Base plugin class for organization plugins."""
+
+
+class BaseOrganizationPlugin:
+    """
+    Base class for organization plugins.
+
+    Plugins must implement all methods of this class even if it is only to "pass".
+    """
+
+    def run_after_create(self, organization) -> None:
+        """Method called after creating an organization."""
+        raise NotImplementedError("Plugins must implement the run_after_create method")
diff --git a/src/backend/core/plugins/loader.py b/src/backend/core/plugins/loader.py
new file mode 100644
index 0000000..9cc274f
--- /dev/null
+++ b/src/backend/core/plugins/loader.py
@@ -0,0 +1,32 @@
+"""Helper functions to load and run organization plugins."""
+
+from functools import lru_cache
+from typing import List
+
+from django.conf import settings
+from django.utils.module_loading import import_string
+
+from core.plugins.base import BaseOrganizationPlugin
+
+
+@lru_cache(maxsize=None)
+def get_organization_plugins() -> List[BaseOrganizationPlugin]:
+    """
+    Return a list of all organization plugins.
+    While the plugins initialization does not depend on the request, we can cache the result.
+    """
+    return [
+        import_string(plugin_path)() for plugin_path in settings.ORGANIZATION_PLUGINS
+    ]
+
+
+def organization_plugins_run_after_create(organization):
+    """
+    Run the after create method for all organization plugins.
+
+    Each plugin will be called in the order they are listed in the settings.
+    Each plugin is responsible to save changes if needed, this is not optimized
+    but this could be easily improved later if needed.
+    """
+    for plugin_instance in get_organization_plugins():
+        plugin_instance.run_after_create(organization)
diff --git a/src/backend/people/settings.py b/src/backend/people/settings.py
index a7e96ba..6c1bb41 100755
--- a/src/backend/people/settings.py
+++ b/src/backend/people/settings.py
@@ -473,6 +473,11 @@ class Base(Configuration):
             environ_prefix=None,
         )
     )
+    ORGANIZATION_PLUGINS = values.ListValue(
+        default=[],
+        environ_name="ORGANIZATION_PLUGINS",
+        environ_prefix=None,
+    )
 
     # pylint: disable=invalid-name
     @property
diff --git a/src/backend/plugins/__init__.py b/src/backend/plugins/__init__.py
new file mode 100644
index 0000000..9679fe2
--- /dev/null
+++ b/src/backend/plugins/__init__.py
@@ -0,0 +1 @@
+"""Concrete implementation of plugins which can be used or not in the application."""
diff --git a/src/backend/plugins/organizations.py b/src/backend/plugins/organizations.py
new file mode 100644
index 0000000..0108542
--- /dev/null
+++ b/src/backend/plugins/organizations.py
@@ -0,0 +1,74 @@
+"""Organization related plugins."""
+
+import logging
+
+import requests
+
+from core.plugins.base import BaseOrganizationPlugin
+
+logger = logging.getLogger(__name__)
+
+
+class NameFromSiretOrganizationPlugin(BaseOrganizationPlugin):
+    """
+    This plugin is used to convert the organization registration ID
+    to the proper name. For French organization the registration ID
+    is the SIRET.
+
+    This is a very specific plugin for French organizations and this
+    first implementation is very basic. It surely needs to be improved
+    later.
+    """
+
+    _api_url = "https://recherche-entreprises.api.gouv.fr/search?q={siret}"
+
+    @staticmethod
+    def _extract_name_from_organization_data(organization_data):
+        """Extract the name from the organization data."""
+        try:
+            return organization_data["liste_enseignes"][0].title()
+        except KeyError:
+            logger.warning("Missing key 'liste_enseignes' in %s", organization_data)
+        except IndexError:
+            logger.warning("Empty list 'liste_enseignes' in %s", organization_data)
+        return None
+
+    def _get_organization_name_from_siret(self, siret):
+        """Return the organization name from the SIRET."""
+        try:
+            response = requests.get(self._api_url.format(siret=siret), timeout=10)
+            response.raise_for_status()
+            data = response.json()
+        except requests.RequestException as exc:
+            logger.exception("%s: Unable to fetch organization name from SIRET", exc)
+            return None
+
+        for result in data["results"]:
+            for organization in result["matching_etablissements"]:
+                if organization.get("siret") == siret:
+                    return self._extract_name_from_organization_data(organization)
+
+        logger.warning("No organization name found for SIRET %s", siret)
+        return None
+
+    def run_after_create(self, organization):
+        """After creating an organization, update the organization name."""
+        if not organization.registration_id_list:
+            # No registration ID to convert...
+            return
+
+        if organization.name not in organization.registration_id_list:
+            # The name has probably already been customized
+            return
+
+        # In the nominal case, there is only one registration ID because
+        # the organization as been created from it.
+        name = self._get_organization_name_from_siret(
+            organization.registration_id_list[0]
+        )
+        if not name:
+            return
+
+        organization.name = name
+        organization.save(update_fields=["name", "updated_at"])
+        logger.info("Organization %s name updated to %s", organization, name)
diff --git a/src/backend/plugins/tests/__init__.py b/src/backend/plugins/tests/__init__.py
new file mode 100644
index 0000000..6b72241
--- /dev/null
+++ b/src/backend/plugins/tests/__init__.py
@@ -0,0 +1 @@
+"""Tests for the plugins module."""
diff --git a/src/backend/plugins/tests/organizations/__init__.py b/src/backend/plugins/tests/organizations/__init__.py
new file mode 100644
index 0000000..6587cfc
--- /dev/null
+++ b/src/backend/plugins/tests/organizations/__init__.py
@@ -0,0 +1 @@
+"""Test for the Organization plugins module."""
diff --git a/src/backend/plugins/tests/organizations/test_name_from_siret_organization_plugin.py b/src/backend/plugins/tests/organizations/test_name_from_siret_organization_plugin.py
new file mode 100644
index 0000000..b7b33ee
--- /dev/null
+++ b/src/backend/plugins/tests/organizations/test_name_from_siret_organization_plugin.py
@@ -0,0 +1,137 @@
+"""Tests for the NameFromSiretOrganizationPlugin plugin."""
+
+import pytest
+import responses
+
+from core.models import Organization
+from core.plugins.loader import get_organization_plugins
+
+pytestmark = pytest.mark.django_db
+
+
+# disable unused-argument for because organization_plugins_settings
+# is used to set the settings not to be used in the test
+# pylint: disable=unused-argument
+
+
+@pytest.fixture(name="organization_plugins_settings")
+def organization_plugins_settings_fixture(settings):
+    """
+    Fixture to set the organization plugins settings and
+    leave the initial state after the test.
+    """
+    _original_plugins = settings.ORGANIZATION_PLUGINS
+
+    settings.ORGANIZATION_PLUGINS = [
+        "plugins.organizations.NameFromSiretOrganizationPlugin"
+    ]
+
+    # reset get_organization_plugins cache
+    get_organization_plugins.cache_clear()
+    get_organization_plugins()  # call to populate the cache
+
+    yield
+
+    # reset get_organization_plugins cache
+    settings.ORGANIZATION_PLUGINS = _original_plugins
+    get_organization_plugins.cache_clear()
+    get_organization_plugins()  # call to populate the cache
+
+
+@responses.activate
+def test_organization_plugins_run_after_create(organization_plugins_settings):
+    """Test the run_after_create method of the organization plugins for nominal case."""
+    responses.add(
+        responses.GET,
+        "https://recherche-entreprises.api.gouv.fr/search?q=12345678901234",
+        json={
+            "results": [
+                {
+                    # skipping some fields
+                    "matching_etablissements": [
+                        # skipping some fields
+                        {
+                            "liste_enseignes": ["AMAZING ORGANIZATION"],
+                            "siret": "12345678901234",
+                        }
+                    ]
+                }
+            ],
+            "total_results": 1,
+            "page": 1,
+            "per_page": 10,
+            "total_pages": 1,
+        },
+        status=200,
+    )
+
+    organization = Organization.objects.create(
+        name="12345678901234", registration_id_list=["12345678901234"]
+    )
+    assert organization.name == "Amazing Organization"
+
+    # Check that the organization has been updated in the database also
+    organization.refresh_from_db()
+    assert organization.name == "Amazing Organization"
+
+
+@responses.activate
+def test_organization_plugins_run_after_create_api_fail(organization_plugins_settings):
+    """Test the plugin when the API call fails."""
+    responses.add(
+        responses.GET,
+        "https://recherche-entreprises.api.gouv.fr/search?q=12345678901234",
+        json={"error": "Internal Server Error"},
+        status=500,
+    )
+
+    organization = Organization.objects.create(
+        name="12345678901234", registration_id_list=["12345678901234"]
+    )
+    assert organization.name == "12345678901234"
+
+
+@responses.activate
+@pytest.mark.parametrize(
+    "results",
+    [
+        {"results": []},
+        {"results": [{"matching_etablissements": []}]},
+        {"results": [{"matching_etablissements": [{"siret": "12345678901234"}]}]},
+        {
+            "results": [
+                {
+                    "matching_etablissements": [
+                        {"siret": "12345678901234", "liste_enseignes": []}
+                    ]
+                }
+            ]
+        },
+    ],
+)
+def test_organization_plugins_run_after_create_missing_data(
+    organization_plugins_settings, results
+):
+    """Test the plugin when the API call returns missing data."""
+    responses.add(
+        responses.GET,
+        "https://recherche-entreprises.api.gouv.fr/search?q=12345678901234",
+        json=results,
+        status=200,
+    )
+
+    organization = Organization.objects.create(
+        name="12345678901234", registration_id_list=["12345678901234"]
+    )
+    assert organization.name == "12345678901234"
+
+
+@responses.activate
+def test_organization_plugins_run_after_create_name_already_set(
+    organization_plugins_settings,
+):
+    """Test the plugin does nothing when the name already differs from the registration ID."""
+    organization = Organization.objects.create(
+        name="Magic WOW", registration_id_list=["12345678901234"]
+    )
+    assert organization.name == "Magic WOW"