diff --git a/cinder/tests/unit/volume/drivers/netapp/dataontap/test_nvme_library.py b/cinder/tests/unit/volume/drivers/netapp/dataontap/test_nvme_library.py
index de877ca975e..2c778aa8ccf 100644
--- a/cinder/tests/unit/volume/drivers/netapp/dataontap/test_nvme_library.py
+++ b/cinder/tests/unit/volume/drivers/netapp/dataontap/test_nvme_library.py
@@ -668,7 +668,7 @@ class NetAppNVMeStorageLibraryTestCase(test.TestCase):
             'netapp_aggregate': 'aggr1',
             'netapp_raid_type': 'raid_dp',
             'netapp_disk_type': 'SSD',
-            'online_extend_support': False,
+            'online_extend_support': True,
             'netapp_is_flexgroup': 'false',
         }]
         if report_provisioned_capacity:
diff --git a/cinder/volume/drivers/netapp/dataontap/nvme_library.py b/cinder/volume/drivers/netapp/dataontap/nvme_library.py
index aaf66376f66..c441fa09b87 100644
--- a/cinder/volume/drivers/netapp/dataontap/nvme_library.py
+++ b/cinder/volume/drivers/netapp/dataontap/nvme_library.py
@@ -544,7 +544,7 @@ class NetAppNVMeStorageLibrary(
             # Add driver capabilities and config info
             pool['QoS_support'] = False
             pool['multiattach'] = True
-            pool['online_extend_support'] = False
+            pool['online_extend_support'] = True
             pool['consistencygroup_support'] = True
             pool['consistent_group_snapshot_enabled'] = True
             pool['reserved_percentage'] = self.reserved_percentage
diff --git a/releasenotes/notes/netapp-nvme-in-use-expansion-d11f03fb64050145.yaml b/releasenotes/notes/netapp-nvme-in-use-expansion-d11f03fb64050145.yaml
new file mode 100644
index 00000000000..dfb519ad0b3
--- /dev/null
+++ b/releasenotes/notes/netapp-nvme-in-use-expansion-d11f03fb64050145.yaml
@@ -0,0 +1,14 @@
+---
+features:
+  - |
+    **NetApp NVMe namespace support for in-use expansion**
+
+    Added support for in-use expansion of NetApp NVMe namespaces, allowing
+    volumes to be resized while attached to running instances without
+    requiring detachment. This feature enables seamless volume expansion
+    for NVMe-backed volumes in NetApp ONTAP environments.
+
+    Key capabilities:
+
+    * **In-use expansion**: Volumes can be expanded while attached to running instances
+    * **NVMe namespace compatibility**: Full support for NetApp NVMe namespace expansion