diff --git a/docs/api/python/te.rst b/docs/api/python/te.rst
index dc3d3dacd2cae..7a0f4b7918a25 100644
--- a/docs/api/python/te.rst
+++ b/docs/api/python/te.rst
@@ -23,7 +23,7 @@ tvm.te
    :members:
    :imported-members:
    :exclude-members:
-      exp, erf, tanh, sigmoid, log, cos, sin, atan, sqrt, rsqrt, floor, ceil,
+      exp, erf, tanh, sigmoid, log, tan, cos, sin, atan, sqrt, rsqrt, floor, ceil,
       trunc, abs, round, nearbyint, isnan, power, popcount, fmod, if_then_else,
       div, indexdiv, indexmod, truncdiv, truncmod, floordiv, floormod,
       comm_reducer, min, max, sum
diff --git a/docs/frontend/tensorflow.rst b/docs/frontend/tensorflow.rst
index 87341ab6b7c60..8a54033a2b09c 100644
--- a/docs/frontend/tensorflow.rst
+++ b/docs/frontend/tensorflow.rst
@@ -135,6 +135,7 @@ Supported Ops
 - ConcatV2
 - Conv2D
 - Cos
+- Tan
 - CropAndResize
 - DecodeJpeg
 - DepthwiseConv2dNative
diff --git a/include/tvm/tir/op.h b/include/tvm/tir/op.h
index 5172b1496ad21..0a714d8fc8c85 100644
--- a/include/tvm/tir/op.h
+++ b/include/tvm/tir/op.h
@@ -515,6 +515,7 @@ TVM_DECLARE_INTRIN_UNARY(sqrt);
 TVM_DECLARE_INTRIN_UNARY(rsqrt);
 TVM_DECLARE_INTRIN_UNARY(log);
 TVM_DECLARE_INTRIN_UNARY(popcount);
+TVM_DECLARE_INTRIN_UNARY(tan);
 TVM_DECLARE_INTRIN_UNARY(cos);
 TVM_DECLARE_INTRIN_UNARY(sin);
 TVM_DECLARE_INTRIN_UNARY(atan);
diff --git a/python/tvm/relay/frontend/mxnet.py b/python/tvm/relay/frontend/mxnet.py
index d74277bbe402f..e34bebe0ce5a3 100644
--- a/python/tvm/relay/frontend/mxnet.py
+++ b/python/tvm/relay/frontend/mxnet.py
@@ -1691,6 +1691,7 @@ def _get_bias_requantize_scale(_inputs, _data_scale, _kernel_scale):
     "ones_like",
     "where",
     "gather_nd",
+    "tan",
     "cos",
     "sin"
 ]
diff --git a/python/tvm/relay/frontend/tensorflow.py b/python/tvm/relay/frontend/tensorflow.py
index 5532e3a5c1a47..837f430fec6c2 100644
--- a/python/tvm/relay/frontend/tensorflow.py
+++ b/python/tvm/relay/frontend/tensorflow.py
@@ -1561,6 +1561,7 @@ def _impl(inputs, attr, params):
     'LessEqual'                         : _broadcast('less_equal'),
     'Log'                               : AttrCvt('log'),
     'Log1p'                             : _log1p(),
+    'Tan'                               : AttrCvt('tan'),
     'Cos'                               : AttrCvt('cos'),
     'Sin'                               : AttrCvt('sin'),
     'LogicalAnd'                        : _logical('logical_and'),
diff --git a/python/tvm/relay/frontend/tflite.py b/python/tvm/relay/frontend/tflite.py
index 352bc6302ee04..501513ec41f1f 100644
--- a/python/tvm/relay/frontend/tflite.py
+++ b/python/tvm/relay/frontend/tflite.py
@@ -69,6 +69,7 @@ def __init__(self, model, subgraph, exp_tab):
             'LOG': self.convert_log,
             'SIN': self.convert_sin,
             'COS': self.convert_cos,
+            'TAN': self.convert_tan,
             'SQRT': self.convert_sqrt,
             'RSQRT': self.convert_rsqrt,
             'NEG': self.convert_neg,
@@ -608,6 +609,13 @@ def convert_sin(self, op):
                 'TFlite quantized SIN operator is not supported yet.')
         return self._convert_unary_elemwise(_op.sin, op)
 
+    def convert_tan(self, op):
+        """Convert TFLite TAN"""
+        if self.is_quantized(op):
+            raise tvm.error.OpNotImplemented(
+                'TFlite quantized TAN operator is not supported yet.')
+        return self._convert_unary_elemwise(_op.tan, op)
+
     def convert_cos(self, op):
         """Convert TFLite COS"""
         if self.is_quantized(op):
diff --git a/python/tvm/relay/op/_tensor.py b/python/tvm/relay/op/_tensor.py
index 7c8ccb7dd8277..190ed437636dc 100644
--- a/python/tvm/relay/op/_tensor.py
+++ b/python/tvm/relay/op/_tensor.py
@@ -27,6 +27,7 @@
 
 
 register_broadcast_schedule("log")
+register_broadcast_schedule("tan")
 register_broadcast_schedule("cos")
 register_broadcast_schedule("sin")
 register_broadcast_schedule("atan")
diff --git a/python/tvm/relay/op/_tensor_grad.py b/python/tvm/relay/op/_tensor_grad.py
index 944e51e636f5e..33a1937992888 100644
--- a/python/tvm/relay/op/_tensor_grad.py
+++ b/python/tvm/relay/op/_tensor_grad.py
@@ -61,6 +61,13 @@ def log_grad(orig, grad):
     return [grad * ones_like(x) / x]
 
 
+@register_gradient("tan")
+def tan_grad(orig, grad):
+    """Returns [grad / (cos^2(x))]"""
+    x = orig.args[0]
+    return [grad / (cos(x) * cos(x))]
+
+
 @register_gradient("cos")
 def cos_grad(orig, grad):
     """Returns [grad * (-sin(x))]"""
diff --git a/python/tvm/relay/op/tensor.py b/python/tvm/relay/op/tensor.py
index 898038dea0043..3f5276c748c0f 100644
--- a/python/tvm/relay/op/tensor.py
+++ b/python/tvm/relay/op/tensor.py
@@ -47,6 +47,21 @@ def log(data):
     """
     return _make.log(data)
 
+def tan(data):
+    """Compute elementwise tan of data.
+
+    Parameters
+    ----------
+    data : relay.Expr
+        The input data
+
+    Returns
+    -------
+    result : relay.Expr
+        The computed result.
+    """
+    return _make.tan(data)
+
 def cos(data):
     """Compute elementwise cos of data.
 
diff --git a/python/tvm/te/__init__.py b/python/tvm/te/__init__.py
index 5970315e854b0..34f5d24042bf3 100644
--- a/python/tvm/te/__init__.py
+++ b/python/tvm/te/__init__.py
@@ -18,7 +18,7 @@
 """Namespace for Tensor Expression Language
 """
 # expose all operators in tvm tir.op
-from tvm.tir import exp, erf, tanh, sigmoid, log, cos, sin, atan, sqrt, rsqrt, floor, ceil
+from tvm.tir import exp, erf, tanh, sigmoid, log, tan, cos, sin, atan, sqrt, rsqrt, floor, ceil
 from tvm.tir import trunc, abs, round, nearbyint, isnan, power, popcount, fmod, if_then_else
 from tvm.tir import div, indexdiv, indexmod, truncdiv, truncmod, floordiv, floormod
 from tvm.tir import comm_reducer, min, max, sum
diff --git a/python/tvm/tir/__init__.py b/python/tvm/tir/__init__.py
index ab78ca6d6d63d..cf0ac8e6744c0 100644
--- a/python/tvm/tir/__init__.py
+++ b/python/tvm/tir/__init__.py
@@ -31,7 +31,7 @@
 
 from .op import call_packed, call_pure_intrin, call_intrin, call_pure_extern, call_extern
 from .op import call_llvm_intrin, all, any, min_value, max_value
-from .op import exp, erf, tanh, sigmoid, log, cos, sin, atan, sqrt, rsqrt, floor, ceil
+from .op import exp, erf, tanh, sigmoid, log, tan, cos, sin, atan, sqrt, rsqrt, floor, ceil
 from .op import trunc, abs, round, nearbyint, isnan, power, popcount, fmod, if_then_else
 from .op import div, indexdiv, indexmod, truncdiv, truncmod, floordiv, floormod
 from .op import comm_reducer, min, max, sum
diff --git a/python/tvm/tir/op.py b/python/tvm/tir/op.py
index 66e70c508438d..716c5c1579670 100644
--- a/python/tvm/tir/op.py
+++ b/python/tvm/tir/op.py
@@ -393,6 +393,22 @@ def log(x):
     """
     return call_pure_intrin(x.dtype, "log", x)
 
+def tan(x):
+    """Take tan of input x.
+
+    Parameters
+    ----------
+    x : PrimExpr
+        Input argument.
+
+    Returns
+    -------
+    y : PrimExpr
+        The result.
+    """
+    return call_pure_intrin(x.dtype, "tan", x)
+
+
 def cos(x):
     """Take cos of input x.
 
diff --git a/src/relay/op/tensor/unary.cc b/src/relay/op/tensor/unary.cc
index caa6451542c98..9425a13fe03f5 100644
--- a/src/relay/op/tensor/unary.cc
+++ b/src/relay/op/tensor/unary.cc
@@ -51,6 +51,17 @@ RELAY_REGISTER_UNARY_OP("log")
 .set_attr<FTVMCompute>("FTVMCompute", RELAY_UNARY_COMPUTE(topi::log));
 
 
+RELAY_REGISTER_UNARY_OP("tan")
+.describe(R"code(Returns the tan of input array, computed element-wise.
+
+.. math::
+   Y = tan(X)
+
+)code" TVM_ADD_FILELINE)
+.set_support_level(1)
+.set_attr<FTVMCompute>("FTVMCompute", RELAY_UNARY_COMPUTE(topi::tan));
+
+
 RELAY_REGISTER_UNARY_OP("cos")
 .describe(R"code(Returns the cos of input array, computed element-wise.
 
diff --git a/src/target/intrin_rule.cc b/src/target/intrin_rule.cc
index 7e9ac71bb753d..ade3bbdf93042 100644
--- a/src/target/intrin_rule.cc
+++ b/src/target/intrin_rule.cc
@@ -40,6 +40,9 @@ TVM_REGISTER_GLOBAL("tvm.intrin.rule.default.log")
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.default.tanh")
 .set_body(DispatchExtern<FloatSuffix>);
 
+TVM_REGISTER_GLOBAL("tvm.intrin.rule.default.tan")
+.set_body(DispatchExtern<FloatSuffix>);
+
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.default.cos")
 .set_body(DispatchExtern<FloatSuffix>);
 
diff --git a/src/target/llvm/intrin_rule_llvm.cc b/src/target/llvm/intrin_rule_llvm.cc
index 758b0afc22ff4..6c5a9cd079afd 100644
--- a/src/target/llvm/intrin_rule_llvm.cc
+++ b/src/target/llvm/intrin_rule_llvm.cc
@@ -91,6 +91,20 @@ TVM_REGISTER_GLOBAL("tvm.intrin.rule.llvm.pow")
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.llvm.popcount")
 .set_body(DispatchLLVMPureIntrin<::llvm::Intrinsic::ctpop, 1>);
 
+TVM_REGISTER_GLOBAL("tvm.intrin.rule.llvm.tan")
+.set_body([](const TVMArgs& targs, TVMRetValue* rv) {
+  PrimExpr e = targs[0];
+  const tir::CallNode* call = e.as<tir::CallNode>();
+  CHECK(call != nullptr);
+  const PrimExpr& x = call->args[0];
+  PrimExpr sin_x = tir::CallNode::make(
+      x.dtype(), "sin", {x}, tir::CallNode::PureIntrinsic);
+  PrimExpr cos_x = tir::CallNode::make(
+      x.dtype(), "cos", {x}, tir::CallNode::PureIntrinsic);
+  PrimExpr tan_x = sin_x / cos_x;
+  *rv = tan_x;
+});
+
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.llvm.cos")
 .set_body(DispatchLLVMPureIntrin<::llvm::Intrinsic::cos, 1>);
 
diff --git a/src/target/llvm/intrin_rule_nvptx.cc b/src/target/llvm/intrin_rule_nvptx.cc
index 6f7a89cebd971..6d41d132724b2 100644
--- a/src/target/llvm/intrin_rule_nvptx.cc
+++ b/src/target/llvm/intrin_rule_nvptx.cc
@@ -81,6 +81,9 @@ TVM_REGISTER_GLOBAL("tvm.intrin.rule.nvptx.pow")
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.nvptx.tanh")
 .set_body(DispatchExternLibDevice);
 
+TVM_REGISTER_GLOBAL("tvm.intrin.rule.nvptx.tan")
+.set_body(DispatchExternLibDevice);
+
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.nvptx.cos")
 .set_body(DispatchExternLibDevice);
 
diff --git a/src/target/llvm/intrin_rule_rocm.cc b/src/target/llvm/intrin_rule_rocm.cc
index 31b7bf19419b5..4e6a661f298d0 100644
--- a/src/target/llvm/intrin_rule_rocm.cc
+++ b/src/target/llvm/intrin_rule_rocm.cc
@@ -80,6 +80,9 @@ TVM_REGISTER_GLOBAL("tvm.intrin.rule.rocm.pow")
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.rocm.tanh")
 .set_body(DispatchExternOCML);
 
+TVM_REGISTER_GLOBAL("tvm.intrin.rule.rocm.tan")
+.set_body(DispatchExternOCML);
+
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.rocm.cos")
 .set_body(DispatchExternOCML);
 
diff --git a/src/target/source/intrin_rule_cuda.cc b/src/target/source/intrin_rule_cuda.cc
index aed6c86e965ba..fc62dae7c9f9e 100644
--- a/src/target/source/intrin_rule_cuda.cc
+++ b/src/target/source/intrin_rule_cuda.cc
@@ -97,6 +97,9 @@ TVM_REGISTER_GLOBAL("tvm.intrin.rule.cuda.erf")
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.cuda.log")
 .set_body(DispatchExtern<CUDAFastMath>);
 
+TVM_REGISTER_GLOBAL("tvm.intrin.rule.cuda.tan")
+.set_body(DispatchExtern<CUDAFastMath>);
+
 TVM_REGISTER_GLOBAL("tvm.intrin.rule.cuda.cos")
 .set_body(DispatchExtern<CUDAFastMath>);
 
diff --git a/src/tir/ir/expr.cc b/src/tir/ir/expr.cc
index 07cae5e2c746f..7572f8d6bbb04 100644
--- a/src/tir/ir/expr.cc
+++ b/src/tir/ir/expr.cc
@@ -229,7 +229,7 @@ PrimExpr LetNode::make(Var var, PrimExpr value, PrimExpr body) {
 
 const char* CallNode::vectorizable_intrinsics[] = {
     "floor", "ceil", "sign", "trunc", "fabs", "round", "exp", "tanh", "sqrt",
-    "log", "sin", "cos", "pow", tir::CallNode::shift_left, tir::CallNode::shift_right,
+    "log", "sin", "cos", "pow", "tan", tir::CallNode::shift_left, tir::CallNode::shift_right,
     tir::CallNode::likely, tir::CallNode::popcount
 };
 
diff --git a/tests/python/frontend/tensorflow/test_forward.py b/tests/python/frontend/tensorflow/test_forward.py
index 2340bd4e6318e..63f96a98472cc 100644
--- a/tests/python/frontend/tensorflow/test_forward.py
+++ b/tests/python/frontend/tensorflow/test_forward.py
@@ -2570,6 +2570,15 @@ def test_forward_cos():
     compare_tf_with_tvm([np_data], ['in_data:0'], 'cos:0')
 
 
+def test_forward_tan():
+    """test operator tan """
+    np_data = np.random.uniform(1, 100, size=(2, 3, 5)).astype(np.float32)
+    tf.reset_default_graph()
+    in_data = tf.placeholder(tf.float32, (2, 3, 5), name="in_data")
+    tf.tan(in_data, name="tan")
+    compare_tf_with_tvm([np_data], ['in_data:0'], 'tan:0')
+
+
 def test_forward_sin():
     """test operator sin """
     np_data = np.random.uniform(1, 100, size=(2, 3, 5)).astype(np.float32)
diff --git a/tests/python/frontend/tflite/test_forward.py b/tests/python/frontend/tflite/test_forward.py
index 427d4bfe28106..9302c20878b19 100644
--- a/tests/python/frontend/tflite/test_forward.py
+++ b/tests/python/frontend/tflite/test_forward.py
@@ -721,6 +721,13 @@ def _test_cos(data):
     """ One iteration of cos """
     return _test_unary_elemwise(math_ops.cos, data)
 #######################################################################
+# Tan
+# ---
+
+def _test_tan(data):
+    """ One iteration of tan """
+    return _test_unary_elemwise(math_ops.tan, data)
+#######################################################################
 # Sqrt
 # ----
 
@@ -763,6 +770,7 @@ def test_all_unary_elemwise():
     if package_version.parse(tf.VERSION) >= package_version.parse('1.14.0'):
         _test_forward_unary_elemwise(_test_ceil)
         _test_forward_unary_elemwise(_test_cos)
+        _test_forward_unary_elemwise(_test_tan)
 
 #######################################################################
 # Element-wise
diff --git a/tests/python/relay/test_op_grad_level1.py b/tests/python/relay/test_op_grad_level1.py
index 3be62a3170fb5..5a69d29d4df2e 100644
--- a/tests/python/relay/test_op_grad_level1.py
+++ b/tests/python/relay/test_op_grad_level1.py
@@ -63,6 +63,7 @@ def check_single_op(opfunc, ref):
                         (relay.nn.relu, lambda x: np.where(x < 0, np.zeros_like(x), np.ones_like(x))),
                         (tvm.relay.cos, lambda x: -1.0 * np.sin(x)),
                         (tvm.relay.sin, lambda x: np.cos(x)),
+                        (tvm.relay.tan, lambda x: 1.0 / (np.cos(x) ** 2)),
                         (tvm.relay.atan, lambda x: 1 / (1 + np.power(x, 2.0)))]:
         check_single_op(opfunc, ref)
 
diff --git a/tests/python/relay/test_op_level1.py b/tests/python/relay/test_op_level1.py
index 194b095642882..dfa42ab9e8e54 100644
--- a/tests/python/relay/test_op_level1.py
+++ b/tests/python/relay/test_op_level1.py
@@ -75,6 +75,7 @@ def check_single_op(opfunc, ref, dtype):
                         (relay.nn.relu, relu),
                         (tvm.relay.cos, np.cos),
                         (tvm.relay.sin, np.sin),
+                        (tvm.relay.tan, np.tan),
                         (tvm.relay.atan, np.arctan)]:
         for dtype in ['float16', 'float32']:
             check_single_op(opfunc, ref, dtype)
diff --git a/topi/include/topi/elemwise.h b/topi/include/topi/elemwise.h
index e35e3e424d6e9..e37683256e4f5 100644
--- a/topi/include/topi/elemwise.h
+++ b/topi/include/topi/elemwise.h
@@ -55,6 +55,7 @@ TOPI_DECLARE_UNARY_OP(round);
 TOPI_DECLARE_UNARY_OP(trunc);
 TOPI_DECLARE_UNARY_OP(abs);
 TOPI_DECLARE_UNARY_OP(cos);
+TOPI_DECLARE_UNARY_OP(tan);
 TOPI_DECLARE_UNARY_OP(sin);
 TOPI_DECLARE_UNARY_OP(atan);
 TOPI_DECLARE_UNARY_OP(isnan);
diff --git a/topi/python/topi/math.py b/topi/python/topi/math.py
index 148d53a54cfe0..ed6bce0d11416 100644
--- a/topi/python/topi/math.py
+++ b/topi/python/topi/math.py
@@ -109,6 +109,23 @@ def tanh(x):
     return tvm.compute(x.shape, lambda *i: tvm.tanh(x(*i)))
 
 
+@tvm.tag_scope(tag=tag.ELEMWISE)
+def tan(x):
+    """Take tan of input x.
+
+    Parameters
+    ----------
+    x : tvm.Tensor
+        Input argument.
+
+    Returns
+    -------
+    y : tvm.Tensor
+        The result.
+    """
+    return tvm.compute(x.shape, lambda *i: tvm.tan(x(*i)))
+
+
 @tvm.tag_scope(tag=tag.ELEMWISE)
 def cos(x):
     """Take cos of input x.
diff --git a/topi/src/topi.cc b/topi/src/topi.cc
index 79e223c30975a..2fba6828eda1c 100644
--- a/topi/src/topi.cc
+++ b/topi/src/topi.cc
@@ -175,6 +175,11 @@ TVM_REGISTER_GLOBAL("topi.erf")
   *rv = erf(args[0]);
   });
 
+TVM_REGISTER_GLOBAL("topi.tan")
+.set_body([](TVMArgs args, TVMRetValue *rv) {
+  *rv = tan(args[0]);
+  });
+
 TVM_REGISTER_GLOBAL("topi.cos")
 .set_body([](TVMArgs args, TVMRetValue *rv) {
   *rv = cos(args[0]);
diff --git a/topi/tests/python/test_topi_basic.py b/topi/tests/python/test_topi_basic.py
index 53b29df4f36d4..63dbdbe2f599f 100644
--- a/topi/tests/python/test_topi_basic.py
+++ b/topi/tests/python/test_topi_basic.py
@@ -44,6 +44,7 @@ def test_apply(func, name):
     test_apply(topi.rsqrt, "rsqrt")
     test_apply(topi.sin, "sin")
     test_apply(topi.cos, "cos")
+    test_apply(topi.tan, "tan")
     test_apply(topi.atan, "atan")
 
 
diff --git a/topi/tests/python/test_topi_math.py b/topi/tests/python/test_topi_math.py
index debc3efe0d275..c9a0453f74d38 100644
--- a/topi/tests/python/test_topi_math.py
+++ b/topi/tests/python/test_topi_math.py
@@ -126,6 +126,7 @@ def check_device(device):
     test_apply(topi.sqrt, "sqrt", np.sqrt, 0, 100)
     test_apply(topi.rsqrt, "rsqrt", lambda x: np.ones_like(x) / np.sqrt(x), 0, 100, skip_name_check=True)
     test_apply(topi.cos, "cos", np.cos, -2.0*np.pi, 2.0*np.pi)
+    test_apply(topi.tan, "tan", np.tan, -2.0*np.pi, 2.0*np.pi)
     test_apply(topi.sin, "sin", np.sin, -2.0*np.pi, 2.0*np.pi)
     test_apply(topi.erf, "erf", scipy.special.erf, -.1, .1, dtype="float32")
     test_isnan(-100, 100)