Query to count the number of tables I have in MySQL

SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = 'dbo' and TABLE_TYPE='BASE TABLE'

This will give you names and table count of all the databases in you mysql

SELECT TABLE_SCHEMA,COUNT(*) FROM information_schema.tables group by TABLE_SCHEMA;

In case you would like a count all the databases plus a summary, please try this:

SELECT IFNULL(table_schema,'Total') "Database",TableCount 
FROM (SELECT COUNT(1) TableCount,table_schema 
      FROM information_schema.tables 
      WHERE table_schema NOT IN ('information_schema','mysql') 
      GROUP BY table_schema WITH ROLLUP) A;

Here is a sample run:

mysql> SELECT IFNULL(table_schema,'Total') "Database",TableCount
    -> FROM (SELECT COUNT(1) TableCount,table_schema
    ->       FROM information_schema.tables
    ->       WHERE table_schema NOT IN ('information_schema','mysql')
    ->       GROUP BY table_schema WITH ROLLUP) A;
+--------------------+------------+
| Database           | TableCount |
+--------------------+------------+
| performance_schema |         17 |
| Total              |         17 |
+--------------------+------------+
2 rows in set (0.29 sec)

Give it a Try !!!

SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = 'dbName';

Source

This is mine:

USE databasename; 
SHOW TABLES; 
SELECT FOUND_ROWS();