diff --git a/mysql-test/r/show_check.result b/mysql-test/r/show_check.result
index f49366cbf08..c1a75281e0e 100644
--- a/mysql-test/r/show_check.result
+++ b/mysql-test/r/show_check.result
@@ -1487,3 +1487,30 @@ UNLOCK TABLES;
 # Connection default
 COMMIT;
 DROP TABLE t1;
+#
+# Bug#55498 SHOW CREATE TRIGGER takes wrong type of metadata lock.
+#
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1 (a INT);
+CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET new.a = 1;
+# Test 1: SHOW CREATE TRIGGER with WRITE locked table.
+# Connection con1
+LOCK TABLE t1 WRITE;
+# Connection default
+SHOW CREATE TRIGGER t1_bi;
+Trigger	sql_mode	SQL Original Statement	character_set_client	collation_connection	Database Collation
+t1_bi		CREATE DEFINER=`root`@`localhost` TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET new.a = 1	utf8	utf8_general_ci	latin1_swedish_ci
+# Connection con1
+UNLOCK TABLES;
+# Test 2: ALTER TABLE with SHOW CREATE TRIGGER in transaction
+# Connection default
+START TRANSACTION;
+SHOW CREATE TRIGGER t1_bi;
+Trigger	sql_mode	SQL Original Statement	character_set_client	collation_connection	Database Collation
+t1_bi		CREATE DEFINER=`root`@`localhost` TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET new.a = 1	utf8	utf8_general_ci	latin1_swedish_ci
+# Connection con1
+ALTER TABLE t1 CHARACTER SET = utf8;
+# Connection default
+COMMIT;
+DROP TRIGGER t1_bi;
+DROP TABLE t1;
diff --git a/mysql-test/t/show_check.test b/mysql-test/t/show_check.test
index 89a43f24296..0323f015e88 100644
--- a/mysql-test/t/show_check.test
+++ b/mysql-test/t/show_check.test
@@ -1279,6 +1279,52 @@ disconnect con1;
 DROP TABLE t1;
 
 
+--echo #
+--echo # Bug#55498 SHOW CREATE TRIGGER takes wrong type of metadata lock.
+--echo #
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+CREATE TABLE t1 (a INT);
+CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET new.a = 1;
+
+--echo # Test 1: SHOW CREATE TRIGGER with WRITE locked table.
+
+--echo # Connection con1
+connect (con1, localhost, root);
+LOCK TABLE t1 WRITE;
+
+--echo # Connection default
+connection default;
+# Should not block.
+SHOW CREATE TRIGGER t1_bi;
+
+--echo # Connection con1
+connection con1;
+UNLOCK TABLES;
+
+--echo # Test 2: ALTER TABLE with SHOW CREATE TRIGGER in transaction
+
+--echo # Connection default
+connection default;
+START TRANSACTION;
+SHOW CREATE TRIGGER t1_bi;
+
+--echo # Connection con1
+connection con1;
+# Should not block.
+ALTER TABLE t1 CHARACTER SET = utf8;
+
+--echo # Connection default
+connection default;
+COMMIT;
+DROP TRIGGER t1_bi;
+DROP TABLE t1;
+disconnect con1;
+
+
 # Wait till all disconnects are completed
 --source include/wait_until_count_sessions.inc
 
diff --git a/sql/sql_show.cc b/sql/sql_show.cc
index 8647237ce72..dc3784eb538 100644
--- a/sql/sql_show.cc
+++ b/sql/sql_show.cc
@@ -7779,6 +7779,10 @@ TABLE_LIST *get_trigger_table(THD *thd, const sp_name *trg_name)
 bool show_create_trigger(THD *thd, const sp_name *trg_name)
 {
   TABLE_LIST *lst= get_trigger_table(thd, trg_name);
+  uint num_tables; /* NOTE: unused, only to pass to open_tables(). */
+  Table_triggers_list *triggers;
+  int trigger_idx;
+  bool error= TRUE;
 
   if (!lst)
     return TRUE;
@@ -7790,35 +7794,35 @@ bool show_create_trigger(THD *thd, const sp_name *trg_name)
   }
 
   /*
-    Open the table by name in order to load Table_triggers_list object.
-
-    NOTE: there is race condition here -- the table can be dropped after
-    LOCK_open is released. It will be fixed later by acquiring shared
-    metadata lock on trigger or table name.
+    Metadata locks taken during SHOW CREATE TRIGGER should be released when
+    the statement completes as it is an information statement.
   */
+  MDL_ticket *mdl_savepoint= thd->mdl_context.mdl_savepoint();
 
-  uint num_tables; /* NOTE: unused, only to pass to open_tables(). */
-
-  if (open_tables(thd, &lst, &num_tables, 0))
+  /*
+    Open the table by name in order to load Table_triggers_list object.
+  */
+  if (open_tables(thd, &lst, &num_tables,
+                  MYSQL_OPEN_FORCE_SHARED_HIGH_PRIO_MDL))
   {
     my_error(ER_TRG_CANT_OPEN_TABLE, MYF(0),
              (const char *) trg_name->m_db.str,
              (const char *) lst->table_name);
 
-    return TRUE;
+    goto exit;
 
     /* Perform closing actions and return error status. */
   }
 
-  Table_triggers_list *triggers= lst->table->triggers;
+  triggers= lst->table->triggers;
 
   if (!triggers)
   {
     my_error(ER_TRG_DOES_NOT_EXIST, MYF(0));
-    return TRUE;
+    goto exit;
   }
 
-  int trigger_idx= triggers->find_trigger_by_name(&trg_name->m_name);
+  trigger_idx= triggers->find_trigger_by_name(&trg_name->m_name);
 
   if (trigger_idx < 0)
   {
@@ -7826,16 +7830,22 @@ bool show_create_trigger(THD *thd, const sp_name *trg_name)
              (const char *) trg_name->m_db.str,
              (const char *) lst->table_name);
 
-    return TRUE;
+    goto exit;
   }
 
-  return show_create_trigger_impl(thd, triggers, trigger_idx);
+  error= show_create_trigger_impl(thd, triggers, trigger_idx);
 
   /*
     NOTE: if show_create_trigger_impl() failed, that means we could not
     send data to the client. In this case we simply raise the error
     status and client connection will be closed.
   */
+
+exit:
+  close_thread_tables(thd);
+  /* Release any metadata locks taken during SHOW CREATE TRIGGER. */
+  thd->mdl_context.rollback_to_savepoint(mdl_savepoint);
+  return error;
 }
 
 class IS_internal_schema_access : public ACL_internal_schema_access