Swimming at the 2003 Pan American Games – Men's 1500 metre freestyle

The Men's 1500m Freestyle event at the 2003 Pan American Games took place on August 17, 2003 (Day 16 of the Games).

Ricardo Monasterio won the gold medal, breaking a string of 12 U.S. titles in a row. Before him, only other non-American had won the race, the Brazilian Tetsuo Okamoto, in the first edition of the Games in 1951.