The men's 100 metre backstroke at the 2007 World Aquatics Championships took place on 26 March (heats and semifinals) and the evening of 27 March (final) at the Rod Laver Arena in Melbourne, Australia.
The men's 100 metre backstroke competition at the 2007 World Aquatics Championships took place on 26 March (heats and semifinals) and ended with the final on the night of 27 March at the Rod Laver Arena in Melbourne, Australia.