diff --git a/neutron_lib/exceptions/network_segment_range.py b/neutron_lib/exceptions/network_segment_range.py
index d722739d9..456ade9d0 100644
--- a/neutron_lib/exceptions/network_segment_range.py
+++ b/neutron_lib/exceptions/network_segment_range.py
@@ -33,3 +33,8 @@ class NetworkSegmentRangeReferencedByProject(exceptions.NeutronException):
 class NetworkSegmentRangeDefaultReadOnly(exceptions.NeutronException):
     message = _("Network Segment Range %(range_id)s is a "
                 "default segment range which could not be updated or deleted.")
+
+
+class NetworkSegmentRangeOverlaps(exceptions.Conflict):
+    message = _("Network segment range overlaps with range(s) "
+                "with id %(range_id)s")
diff --git a/releasenotes/notes/add-network-segment-range-overlap-exception-e8b4b2b425c51c80.yaml b/releasenotes/notes/add-network-segment-range-overlap-exception-e8b4b2b425c51c80.yaml
new file mode 100644
index 000000000..6cc5de843
--- /dev/null
+++ b/releasenotes/notes/add-network-segment-range-overlap-exception-e8b4b2b425c51c80.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``NetworkSegmentRangeOverlaps`` exception to prevent overlapping
+    network segment ranges on creation.