diff --git a/onnxruntime/core/providers/cpu/cpu_execution_provider.cc b/onnxruntime/core/providers/cpu/cpu_execution_provider.cc
index 482692b764..f625e82669 100644
--- a/onnxruntime/core/providers/cpu/cpu_execution_provider.cc
+++ b/onnxruntime/core/providers/cpu/cpu_execution_provider.cc
@@ -64,6 +64,7 @@ class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain,
 class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, double, Neg);
 class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, int8_t, Neg);
 class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, int32_t, Neg);
+class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, int64_t, Neg);
 class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, float, Floor);
 class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, float, Ceil);
 class ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, float, Reciprocal);
@@ -503,6 +504,8 @@ Status RegisterOnnxOperatorKernels(KernelRegistry& kernel_registry) {
       BuildKernelCreateInfo<ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, int8_t, Neg)>,
       BuildKernelCreateInfo<ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, int32_t,
                                                                   Neg)>,
+      BuildKernelCreateInfo<ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, int64_t,
+                                                                  Neg)>,
       BuildKernelCreateInfo<ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, float,
                                                                   Floor)>,
       BuildKernelCreateInfo<ONNX_OPERATOR_TYPED_KERNEL_CLASS_NAME(kCpuExecutionProvider, kOnnxDomain, 6, float, Ceil)>,
diff --git a/onnxruntime/core/providers/cpu/math/element_wise_ops.cc b/onnxruntime/core/providers/cpu/math/element_wise_ops.cc
index 2c29225f28..97316c48f5 100644
--- a/onnxruntime/core/providers/cpu/math/element_wise_ops.cc
+++ b/onnxruntime/core/providers/cpu/math/element_wise_ops.cc
@@ -81,6 +81,7 @@ REG_ELEMENTWISE_TYPED_KERNEL(Neg, 6, float, Neg);
 REG_ELEMENTWISE_TYPED_KERNEL(Neg, 6, double, Neg);
 REG_ELEMENTWISE_TYPED_KERNEL(Neg, 6, int8_t, Neg);
 REG_ELEMENTWISE_TYPED_KERNEL(Neg, 6, int32_t, Neg);
+REG_ELEMENTWISE_TYPED_KERNEL(Neg, 6, int64_t, Neg);
 
 REG_ELEMENTWISE_TYPED_KERNEL(Floor, 6, float, Floor);
 
diff --git a/onnxruntime/test/providers/cpu/math/element_wise_ops_test.cc b/onnxruntime/test/providers/cpu/math/element_wise_ops_test.cc
index f344b6e114..e842b63a50 100644
--- a/onnxruntime/test/providers/cpu/math/element_wise_ops_test.cc
+++ b/onnxruntime/test/providers/cpu/math/element_wise_ops_test.cc
@@ -493,6 +493,14 @@ TEST(MathOpTest, Neg_int32) {
   test.Run(OpTester::ExpectResult::kExpectSuccess, "", {kTensorrtExecutionProvider});  //TensorRT parser: Int32 not allowed as input to this layer
 }
 
+TEST(MathOpTest, Neg_int64) {
+  OpTester test("Neg");
+  std::vector<int64_t> dims{4};
+  test.AddInput<int64_t>("X", dims, {1, -2, 0, -10});
+  test.AddOutput<int64_t>("Y", dims, {-1, 2, 0, 10});
+  test.Run(OpTester::ExpectResult::kExpectSuccess, "", {kTensorrtExecutionProvider});  //TensorRT parser: Int64 not allowed as input to this layer
+}
+
 TEST(MathOpTest, Floor) {
   OpTester test("Floor");
   std::vector<int64_t> dims{2, 2};