diff --git a/script/make-pretty b/script/make-pretty
index 68f229cec..c9b62dec4 100755
--- a/script/make-pretty
+++ b/script/make-pretty
@@ -117,6 +117,7 @@ readonly OT_CLANG_TIDY_BUILD_OPTS=(
 readonly OT_CLANG_TIDY_CHECKS="\
 -*,\
 google-readability-casting,\
+misc-unused-using-decls,\
 modernize-use-bool-literals,\
 modernize-use-equals-default,\
 modernize-use-equals-delete,\
diff --git a/src/cli/cli_dataset.cpp b/src/cli/cli_dataset.cpp
index 53270ca50..18a4ff1a5 100644
--- a/src/cli/cli_dataset.cpp
+++ b/src/cli/cli_dataset.cpp
@@ -47,7 +47,6 @@ using ot::Utils::CmdLineParser::ParseAsIp6Address;
 using ot::Utils::CmdLineParser::ParseAsUint16;
 using ot::Utils::CmdLineParser::ParseAsUint32;
 using ot::Utils::CmdLineParser::ParseAsUint64;
-using ot::Utils::CmdLineParser::ParseAsUint8;
 
 namespace ot {
 namespace Cli {
diff --git a/src/cli/cli_udp.cpp b/src/cli/cli_udp.cpp
index 90badb433..501d29aab 100644
--- a/src/cli/cli_udp.cpp
+++ b/src/cli/cli_udp.cpp
@@ -40,8 +40,6 @@
 #include "common/encoding.hpp"
 #include "utils/parse_cmdline.hpp"
 
-using ot::Encoding::BigEndian::HostSwap16;
-
 using ot::Utils::CmdLineParser::ParseAsHexString;
 using ot::Utils::CmdLineParser::ParseAsIp6Address;
 using ot::Utils::CmdLineParser::ParseAsUint16;
diff --git a/src/core/meshcop/dataset.cpp b/src/core/meshcop/dataset.cpp
index c4591948e..02ddff0e1 100644
--- a/src/core/meshcop/dataset.cpp
+++ b/src/core/meshcop/dataset.cpp
@@ -48,9 +48,6 @@
 namespace ot {
 namespace MeshCoP {
 
-using ot::Encoding::BigEndian::HostSwap16;
-using ot::Encoding::BigEndian::HostSwap32;
-
 Dataset::Dataset(Type aType)
     : mUpdateTime(0)
     , mLength(0)
diff --git a/src/core/meshcop/joiner_router.cpp b/src/core/meshcop/joiner_router.cpp
index 09d97f8cf..b8c12b998 100644
--- a/src/core/meshcop/joiner_router.cpp
+++ b/src/core/meshcop/joiner_router.cpp
@@ -48,8 +48,6 @@
 #include "thread/thread_netif.hpp"
 #include "thread/uri_paths.hpp"
 
-using ot::Encoding::BigEndian::HostSwap16;
-
 namespace ot {
 namespace MeshCoP {
 
diff --git a/src/core/thread/address_resolver.cpp b/src/core/thread/address_resolver.cpp
index a6e179c24..de1e8ab8b 100644
--- a/src/core/thread/address_resolver.cpp
+++ b/src/core/thread/address_resolver.cpp
@@ -49,8 +49,6 @@
 #include "thread/thread_netif.hpp"
 #include "thread/uri_paths.hpp"
 
-using ot::Encoding::BigEndian::HostSwap16;
-
 namespace ot {
 
 AddressResolver::AddressResolver(Instance &aInstance)
diff --git a/src/core/thread/mesh_forwarder.cpp b/src/core/thread/mesh_forwarder.cpp
index ad51a66eb..c0b5a1afe 100644
--- a/src/core/thread/mesh_forwarder.cpp
+++ b/src/core/thread/mesh_forwarder.cpp
@@ -52,8 +52,6 @@
 #include "thread/mle_router.hpp"
 #include "thread/thread_netif.hpp"
 
-using ot::Encoding::BigEndian::HostSwap16;
-
 namespace ot {
 
 void ThreadLinkInfo::SetFrom(const Mac::RxFrame &aFrame)
diff --git a/src/core/thread/mle_router.cpp b/src/core/thread/mle_router.cpp
index a777337d7..d6189190d 100644
--- a/src/core/thread/mle_router.cpp
+++ b/src/core/thread/mle_router.cpp
@@ -51,8 +51,6 @@
 #include "thread/uri_paths.hpp"
 #include "utils/otns.hpp"
 
-using ot::Encoding::BigEndian::HostSwap16;
-
 namespace ot {
 namespace Mle {
 
diff --git a/tests/unit/test_cmd_line_parser.cpp b/tests/unit/test_cmd_line_parser.cpp
index 59339e209..33c99dd98 100644
--- a/tests/unit/test_cmd_line_parser.cpp
+++ b/tests/unit/test_cmd_line_parser.cpp
@@ -42,8 +42,6 @@ using ot::Utils::CmdLineParser::ParseAsHexString;
 using ot::Utils::CmdLineParser::ParseAsInt16;
 using ot::Utils::CmdLineParser::ParseAsInt32;
 using ot::Utils::CmdLineParser::ParseAsInt8;
-using ot::Utils::CmdLineParser::ParseAsIp6Address;
-using ot::Utils::CmdLineParser::ParseAsIp6Prefix;
 using ot::Utils::CmdLineParser::ParseAsUint16;
 using ot::Utils::CmdLineParser::ParseAsUint32;
 using ot::Utils::CmdLineParser::ParseAsUint64;
diff --git a/tests/unit/test_lowpan.cpp b/tests/unit/test_lowpan.cpp
index 6fc0e1604..540ac0f47 100644
--- a/tests/unit/test_lowpan.cpp
+++ b/tests/unit/test_lowpan.cpp
@@ -32,7 +32,6 @@
 #include "test_util.hpp"
 
 using namespace ot;
-using ot::Encoding::BigEndian::HostSwap16;
 
 namespace ot {