Italy competed at the 2015 World Aquatics Championships in Kazan, Russia from 24 July to 9 August 2015. It won at least one medal in all disciplines except high diving.
Italian divers qualified for the individual spots and the synchronized teams at the World Championships.
Italy has qualified one high diver at the World Championships.
Italy has nominated eleven swimmers to compete in the open water marathon.
Italian swimmers have achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard entry time, and 1 at the B-standard): Swimmers must qualify at the 2015 Italian Spring Championships and Sette Colli Trophy (for pool events) to confirm their places for the Worlds.
Thirty-seven swimmers (19 men and 18 women) have been nominated to the Italian team at the Worlds, including 2008 Olympic champion and world record holder Federica Pellegrini and 2013 Worlds bronze medalist Gregorio Paltrinieri in the men's 1500 m freestyle.
Italy fielded a full team of fourteen synchronized swimmers (one man and thirteen women) to compete in each of the following events.