SELECT owner, TABLE_NAME
  FROM dba_tables

If you do not have access to DBA_TABLES, you can see all the tables that your account has access to through the ALL_TABLES view

SELECT owner, TABLE_NAME
  FROM all_tables

although that may be a subset of the tables available in the database (ALL_TABLES shows you the information for all the tables that your user has been granted access to).

If you are only concerned with the tables that you own, not those that you have access to, you could use USER_TABLES

SELECT TABLE_NAME
  FROM user_tables

Since USER_TABLES only has information about the tables that you own, it does not have an OWNER column– the owner, by definition, is you.