diff --git a/src/contrib/msc/core/ir/graph_builder.h b/src/contrib/msc/core/ir/graph_builder.h
index 4b042c5617e4..d514a793475d 100644
--- a/src/contrib/msc/core/ir/graph_builder.h
+++ b/src/contrib/msc/core/ir/graph_builder.h
@@ -51,7 +51,8 @@ namespace msc {
 using Expr = tvm::RelayExpr;
 using RelaxExprVisitor = tvm::relax::ExprVisitor;
 using RelayExprVisitor = tvm::relay::ExprVisitor;
-using namespace tvm::runtime;
+
+using tvm::runtime::NDArray;
 
 /*!
  * \brief Config for building MSCGraph.
diff --git a/src/relay/backend/vm/compiler.h b/src/relay/backend/vm/compiler.h
index acb4d2d1d258..d22fb3d4d5ca 100644
--- a/src/relay/backend/vm/compiler.h
+++ b/src/relay/backend/vm/compiler.h
@@ -51,7 +51,8 @@ namespace tvm {
 namespace relay {
 namespace vm {
 
-using namespace tvm::runtime;
+using tvm::runtime::ModulePropertyMask;
+using tvm::runtime::NDArray;
 using namespace tvm::runtime::vm;
 using namespace relay::transform;
 
diff --git a/src/relay/parser/parser.cc b/src/relay/parser/parser.cc
index b519a1778ce0..233455bf89ba 100644
--- a/src/relay/parser/parser.cc
+++ b/src/relay/parser/parser.cc
@@ -48,6 +48,8 @@ namespace relay {
 /*! \brief The meta table maps from type key to a sequence of objects. */
 using MetaTable = Map<String, Array<ObjectRef>>;
 
+using tvm::runtime::NDArray;
+using tvm::runtime::String2DLDataType;
 using tvm::transform::CreateModulePass;
 using tvm::transform::PassContext;
 
diff --git a/src/relay/parser/token.h b/src/relay/parser/token.h
index 7b11e701cf6e..13875cb09391 100644
--- a/src/relay/parser/token.h
+++ b/src/relay/parser/token.h
@@ -36,8 +36,6 @@
 namespace tvm {
 namespace relay {
 
-using namespace runtime;
-
 enum class TokenType {
   kCommentStart,
   kCommentEnd,
diff --git a/src/relay/parser/tokenizer.h b/src/relay/parser/tokenizer.h
index 04dcd3263e99..2b7ad4e5593e 100644
--- a/src/relay/parser/tokenizer.h
+++ b/src/relay/parser/tokenizer.h
@@ -41,8 +41,6 @@
 namespace tvm {
 namespace relay {
 
-using namespace runtime;
-
 // trim from start (in place)
 static inline void ltrim(std::string& s) {  // NOLINT(*)
   s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int ch) { return !std::isspace(ch); }));
diff --git a/src/runtime/contrib/cblas/gemm_common.h b/src/runtime/contrib/cblas/gemm_common.h
index af073da9ba1a..91341976bd02 100644
--- a/src/runtime/contrib/cblas/gemm_common.h
+++ b/src/runtime/contrib/cblas/gemm_common.h
@@ -34,7 +34,10 @@
 namespace tvm {
 namespace contrib {
 
-using namespace runtime;
+using runtime::TVMArgs;
+using runtime::TVMRetValue;
+using runtime::TypeMatch;
+
 inline int ColumnStride(const DLTensor* tensor) {
   // If the tensor itself is transposed then it will have strides
   // backward from what we expect.  Regardless, the max of the strides
diff --git a/src/runtime/contrib/json/json_node.h b/src/runtime/contrib/json/json_node.h
index bafe6cfbec18..dd16c606815a 100644
--- a/src/runtime/contrib/json/json_node.h
+++ b/src/runtime/contrib/json/json_node.h
@@ -42,7 +42,6 @@ namespace tvm {
 namespace runtime {
 namespace json {
 
-using namespace tvm::runtime;
 using JSONGraphAttrs = std::unordered_map<std::string, dmlc::any>;
 
 /*!
diff --git a/src/runtime/contrib/nnpack/nnpack_utils.h b/src/runtime/contrib/nnpack/nnpack_utils.h
index 4396ea0bcde6..ed0312dac476 100644
--- a/src/runtime/contrib/nnpack/nnpack_utils.h
+++ b/src/runtime/contrib/nnpack/nnpack_utils.h
@@ -30,7 +30,6 @@
 
 namespace tvm {
 namespace contrib {
-using namespace runtime;
 
 struct NNPackThreadLocalEntry {
   pthreadpool_t threadpool{nullptr};
diff --git a/src/runtime/contrib/verilator/verilator_runtime.h b/src/runtime/contrib/verilator/verilator_runtime.h
index 9ef17d7481ab..14bf0bcdfc9b 100644
--- a/src/runtime/contrib/verilator/verilator_runtime.h
+++ b/src/runtime/contrib/verilator/verilator_runtime.h
@@ -43,7 +43,6 @@ namespace tvm {
 namespace runtime {
 namespace contrib {
 
-using namespace tvm::runtime;
 using namespace tvm::runtime::contrib;
 using namespace tvm::runtime::json;