diff --git a/tfjs-converter/src/operations/operation_mapper.ts b/tfjs-converter/src/operations/operation_mapper.ts
index a0e2e0787b1..a9eccdff00a 100644
--- a/tfjs-converter/src/operations/operation_mapper.ts
+++ b/tfjs-converter/src/operations/operation_mapper.ts
@@ -499,6 +499,9 @@ export function parseDtypeParam(value: string|tensorflow.DataType): DataType {
       return 'float32';
     case tensorflow.DataType.DT_STRING:
       return 'string';
+    case tensorflow.DataType.DT_COMPLEX64:
+    case tensorflow.DataType.DT_COMPLEX128:
+      return 'complex64';
     default:
       // Unknown dtype error will happen at runtime (instead of parse time),
       // since these nodes might not be used by the actual subgraph execution.
diff --git a/tfjs-converter/src/operations/operation_mapper_test.ts b/tfjs-converter/src/operations/operation_mapper_test.ts
index 522d95382b3..527094b1b6c 100644
--- a/tfjs-converter/src/operations/operation_mapper_test.ts
+++ b/tfjs-converter/src/operations/operation_mapper_test.ts
@@ -155,6 +155,12 @@ const SIMPLE_MODEL: tensorflow.IGraphDef = {
       input: ['BiasAdd'],
       attr: {DstT: {type: tensorflow.DataType.DT_HALF}}
     },
+    {
+      name: 'Cast4',
+      op: 'Cast',
+      input: ['BiasAdd'],
+      attr: {DstT: {type: tensorflow.DataType.DT_COMPLEX64}}
+    }
   ],
   library: {
     function: [
@@ -310,7 +316,7 @@ describe('operationMapper without signature', () => {
       it('should find the graph output nodes', () => {
         expect(convertedGraph.outputs.map(node => node.name)).toEqual([
           'Fill', 'Squeeze', 'Squeeze2', 'Split', 'LogicalNot',
-          'FusedBatchNorm', 'Cast2', 'Cast3'
+          'FusedBatchNorm', 'Cast2', 'Cast3', 'Cast4'
         ]);
       });
 
@@ -324,7 +330,7 @@ describe('operationMapper without signature', () => {
         expect(Object.keys(convertedGraph.nodes)).toEqual([
           'image_placeholder', 'Const', 'Shape', 'Value', 'Fill', 'Conv2D',
           'BiasAdd', 'Cast', 'Squeeze', 'Squeeze2', 'Split', 'LogicalNot',
-          'FusedBatchNorm', 'Cast2', 'Cast3'
+          'FusedBatchNorm', 'Cast2', 'Cast3', 'Cast4'
         ]);
       });
     });
@@ -447,6 +453,10 @@ describe('operationMapper without signature', () => {
         expect(convertedGraph.nodes['Cast'].attrParams['dtype'].value)
             .toEqual('int32');
       });
+      it('should map params with complex64 dtype', () => {
+        expect(convertedGraph.nodes['Cast4'].attrParams['dtype'].value)
+            .toEqual('complex64');
+      });
     });
   });
 });
@@ -486,7 +496,7 @@ describe('operationMapper with signature', () => {
         expect(Object.keys(convertedGraph.nodes)).toEqual([
           'image_placeholder', 'Const', 'Shape', 'Value', 'Fill', 'Conv2D',
           'BiasAdd', 'Cast', 'Squeeze', 'Squeeze2', 'Split', 'LogicalNot',
-          'FusedBatchNorm', 'Cast2', 'Cast3'
+          'FusedBatchNorm', 'Cast2', 'Cast3', 'Cast4'
         ]);
       });
     });
@@ -552,6 +562,10 @@ describe('operationMapper with signature', () => {
         expect(convertedGraph.nodes['Cast3'].attrParams['dtype'].value)
             .toEqual('float32');
       });
+      it('should map params with complex64 dtype', () => {
+        expect(convertedGraph.nodes['Cast4'].attrParams['dtype'].value)
+            .toEqual('complex64');
+      });
     });
   });
 });