diff --git a/mlir/include/mlir/Dialect/SPIRV/SPIRVGLSLOps.td b/mlir/include/mlir/Dialect/SPIRV/SPIRVGLSLOps.td
--- a/mlir/include/mlir/Dialect/SPIRV/SPIRVGLSLOps.td
+++ b/mlir/include/mlir/Dialect/SPIRV/SPIRVGLSLOps.td
@@ -233,6 +233,38 @@
 
 // -----
 
+def SPV_GLSLTanOp : SPV_GLSLUnaryArithmeticOp<"Tan", 15, SPV_Float16or32> {
+  let summary = "Tangent of operand in radians";
+
+  let description = [{
+    The standard trigonometric tangent of x radians.
+
+    The operand x must be a scalar or vector whose component type is 16-bit or 
+    32-bit floating-point.
+
+    Result Type and the type of x must be the same type. Results are computed 
+    per component.
+
+    <!-- End of AutoGen section -->
+    ```
+    restricted-float-scalar-type ::=  `f16` | `f32`
+    restricted-float-scalar-vector-type ::=
+      restricted-float-scalar-type |
+      `vector<` integer-literal `x` restricted-float-scalar-type `>`
+    tan-op ::= ssa-id `=` `spv.GLSL.Tan` ssa-use `:`
+               restricted-float-scalar-vector-type
+    ```
+    #### Example:
+
+    ```mlir
+    %2 = spv.GLSL.Tan %0 : f32
+    %3 = spv.GLSL.Tan %1 : vector<3xf16>
+    ```
+  }];
+}
+
+// -----
+
 def SPV_GLSLExpOp : SPV_GLSLUnaryArithmeticOp<"Exp", 27, SPV_Float16or32> {
   let summary = "Exponentiation of Operand 1";
 
diff --git a/mlir/test/Dialect/SPIRV/Serialization/glsl-ops.mlir b/mlir/test/Dialect/SPIRV/Serialization/glsl-ops.mlir
--- a/mlir/test/Dialect/SPIRV/Serialization/glsl-ops.mlir
+++ b/mlir/test/Dialect/SPIRV/Serialization/glsl-ops.mlir
@@ -12,6 +12,8 @@
     %3 = spv.GLSL.Cos %arg0 : f32
     // CHECK: {{%.*}} = spv.GLSL.Sin {{%.*}} : f32
     %4 = spv.GLSL.Sin %arg0 : f32
+    // CHECK: {{%.*}} = spv.GLSL.Tan {{%.*}} : f32
+    %5 = spv.GLSL.Tan %arg0 : f32
     spv.Return
   }
 }
diff --git a/mlir/test/Dialect/SPIRV/glslops.mlir b/mlir/test/Dialect/SPIRV/glslops.mlir
--- a/mlir/test/Dialect/SPIRV/glslops.mlir
+++ b/mlir/test/Dialect/SPIRV/glslops.mlir
@@ -139,3 +139,19 @@
   %2 = spv.GLSL.Sin %arg0 : vector<3xf16>
   return
 }
+
+//===----------------------------------------------------------------------===//
+// spv.GLSL.Tan
+//===----------------------------------------------------------------------===//
+
+func @tan(%arg0 : f32) -> () {
+  // CHECK: spv.GLSL.Tan {{%.*}} : f32
+  %2 = spv.GLSL.Tan %arg0 : f32
+  return
+}
+
+func @tanvec(%arg0 : vector<3xf16>) -> () {
+  // CHECK: spv.GLSL.Tan {{%.*}} : vector<3xf16>
+  %2 = spv.GLSL.Tan %arg0 : vector<3xf16>
+  return
+}