diff --git a/openedx/core/djangoapps/user_api/accounts/api.py b/openedx/core/djangoapps/user_api/accounts/api.py
index bc4fd1d1a769..f1b20fd6ab85 100644
--- a/openedx/core/djangoapps/user_api/accounts/api.py
+++ b/openedx/core/djangoapps/user_api/accounts/api.py
@@ -420,6 +420,10 @@ def contains_url(value):
         return bool(regex)
 
     if name:
+        # Validation for the name length
+        if len(name) > 255:
+            return _("Full name can't be longer than 255 symbols")
+
         return _('Enter a valid name') if (contains_html(name) or contains_url(name)) else ''
     else:
         return accounts.REQUIRED_FIELD_NAME_MSG
diff --git a/openedx/core/djangoapps/user_api/accounts/tests/test_api.py b/openedx/core/djangoapps/user_api/accounts/tests/test_api.py
index 569ec984662b..81a3158eb5bb 100644
--- a/openedx/core/djangoapps/user_api/accounts/tests/test_api.py
+++ b/openedx/core/djangoapps/user_api/accounts/tests/test_api.py
@@ -34,7 +34,8 @@
 from openedx.core.djangoapps.user_api.accounts import PRIVATE_VISIBILITY
 from openedx.core.djangoapps.user_api.accounts.api import (
     get_account_settings,
-    update_account_settings
+    update_account_settings,
+    get_name_validation_error
 )
 from openedx.core.djangoapps.user_api.accounts.tests.retirement_helpers import (  # pylint: disable=unused-import
     RetirementTestCase,
@@ -570,6 +571,13 @@ def test_change_country_removes_state(self):
         assert account_settings['country'] is None
         assert account_settings['state'] is None
 
+    def test_get_name_validation_error_too_long(self):
+        """
+        Test validation error when the name is too long.
+        """
+        result = get_name_validation_error("A" * 256)
+        assert result == "Full name can't be longer than 255 symbols"
+
 
 @patch('openedx.core.djangoapps.user_api.accounts.image_helpers._PROFILE_IMAGE_SIZES', [50, 10])
 @patch.dict(