The 2003 Men's Hockey Asia Cup was an international field hockey tournament held in Kuala Lumpur, Malaysia from 21 to 28 September 2003.

It was the sixth time that the Men's Hockey Asia Cup was held since its inception back in 1982.

The winner of the tournament qualified for the 2006 Men's Hockey World Cup in Germany.

Eight teams competed in the tournament with seven of them booking a spot via the host nation spot or by finishing in the top six of the previous tournament with the remaining spot being played between seven teams (which was won by Hong Kong).

[1] South Korea claimed the bronze medal after defeating Japan 4–2.