diff --git a/testing/web-platform/tests/webnn/conformance_tests/scatterElements.https.any.js b/testing/web-platform/tests/webnn/conformance_tests/scatterElements.https.any.js
index 18aebf98b4c1..9fac08f7beb5 100644
--- a/testing/web-platform/tests/webnn/conformance_tests/scatterElements.https.any.js
+++ b/testing/web-platform/tests/webnn/conformance_tests/scatterElements.https.any.js
@@ -46,6 +46,40 @@ const scatterElementsTests = [
       }
     }
   },
+  {
+    'name': 'Scatter elements along axis 0 and constant indices',
+    'graph': {
+      'inputs': {
+        'input': {
+          'data': [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0],
+          'descriptor': {shape: [3, 3], dataType: 'float32'}
+        },
+        'indices': {
+          'data': [1, 0, 2, 0, 2, 1],
+          'descriptor': {shape: [2, 3], dataType: 'int32'},
+          'constant': true
+        },
+        'updates': {
+          'data': [1.0, 1.1, 1.2, 2.0, 2.1, 2.2],
+          'descriptor': {shape: [2, 3], dataType: 'float32'}
+        }
+      },
+      'operators': [{
+        'name': 'scatterElements',
+        'arguments': [
+          {'input': 'input'}, {'indices': 'indices'}, {'updates': 'updates'},
+          {'options': {'axis': 0}}
+        ],
+        'outputs': 'output'
+      }],
+      'expectedOutputs': {
+        'output': {
+          'data': [2.0, 1.1, 0.0, 1.0, 0.0, 2.2, 0.0, 2.1, 1.2],
+          'descriptor': {shape: [3, 3], dataType: 'float32'}
+        }
+      }
+    }
+  },
   {
     'name': 'Scatter elements along axis 1',
     'graph': {
@@ -78,6 +112,40 @@ const scatterElementsTests = [
         }
       }
     }
+  },
+  {
+    'name': 'Scatter elements along axis 1 and constant indices',
+    'graph': {
+      'inputs': {
+        'input': {
+          'data': [1.0, 2.0, 3.0, 4.0, 5.0],
+          'descriptor': {shape: [1, 5], dataType: 'float32'}
+        },
+        'indices': {
+          'data': [1, 3],
+          'descriptor': {shape: [1, 2], dataType: 'int32'},
+          'constant': true
+        },
+        'updates': {
+          'data': [1.1, 2.1],
+          'descriptor': {shape: [1, 2], dataType: 'float32'}
+        }
+      },
+      'operators': [{
+        'name': 'scatterElements',
+        'arguments': [
+          {'input': 'input'}, {'indices': 'indices'}, {'updates': 'updates'},
+          {'options': {'axis': 1}}
+        ],
+        'outputs': 'output'
+      }],
+      'expectedOutputs': {
+        'output': {
+          'data': [1.0, 1.1, 3.0, 2.1, 5.0],
+          'descriptor': {shape: [1, 5], dataType: 'float32'}
+        }
+      }
+    }
   }
 ];