Swimming at the 2005 World Aquatics Championships – Men's 200 metre freestyle

The men's 200 freestyle at the 11th FINA World Aquatics Championships swam 25+26 July 2005 in the Olympic pool at Parc Jean-Drapeau in Montreal, Canada. 95 swimmers were entered in the preliminary heats, which swam in the morning of July 25. The top-16 swimmers from the prelims advanced on to semifinal heats that evening. From the semifinals, the top 8 swimmers advanced onto the next night's final.

The existing records at the start of the event were:
 * World record (WR): 1:44.06, Ian Thorpe (Australia), 25 July 2001 in Fukuoka, Japan.
 * Championship record (CR): same