The 2004 Men's Pan American Cup was the second edition of the Men's Pan American Cup, the quadrennial men's international field hockey championship of the Americas organized by the Pan American Hockey Federation.

The tournament doubled as the qualifier to the 2006 World Cup to be held in Mönchengladbach, Germany.

The winner would qualify directly while the runner-up would have the chance to obtain one of five berths at the World Cup Qualifier in Changzhou, China.

Argentina won the tournament for the first time after defeating Canada 2–1 in the final, earning an automatic berth at the 2006 World Cup.

[1] Below are the 13 umpires appointed by the Pan American Hockey Federation: All times are Eastern Daylight Time (UTC−04:00) There were 240 goals scored in 35 matches, for an average of 6.86 goals per match.