The 2003 Asian Baseball Championship was the 22nd edition of the Asian Baseball Championship.

The tournament was contested in the Sapporo Dome in Sapporo, Japan from 31 October to 7 November 2003.

[1] The tournament was sanctioned by the Asian Baseball Federation.

The top two teams of the tournament, Japan and Chinese Taipei, gained automatic entry into the 2004 Olympic Games in Athens.

[2]