Swimming at the 2005 World Aquatics Championships – Men's 1500 metre freestyle

The men's 1500 metre freestyle at the 2005 World Aquatics Championships occurred on the morning of 30 July (heats) and in the evening of 31 July (final) in the Olympic pool at Parc Jean-Drapeau in Montreal, Canada. 34 swimmers were entered in the event, of which 33 swam.

The existing records at the start of the event were:
 * World record (WR): 14:34.56, Grant Hackett (Australia), July 21, 2001 in Fukuoka, Japan.
 * Championship record (CR): same

Heats
The top-8 swimmers from the 5 preliminary heats qualified for the event final, the next evening. These eight "qualifiers" are denoted by a Q.