The Formula 1 Powerboat World Championship is an international motorboat racing competition for powerboats organised by the Union Internationale Motonautique (UIM) and promoted by H2O Racing, hence it often being referred to as F1H2O. It is the highest class of inshore powerboat racing in the world, and as such, with it sharing the title of F1, is similar to Formula One car racing. Each race lasts approximately 45 minutes following a circuit marked out in a selected stretch of water, usually a lake, river, dock, or sheltered bay.

The 2015 UIM F1 H2O World Championship was the 32nd season of Formula 1 Powerboat racing. The season consisted of six races, beginning in Doha, Qatar, on 14 March 2015, and ending in Sharjah, UAE, on 18 December 2015.