Offshore powerboat racing is racing by large, ocean-going powerboats, typically point-to-point racing.

Probably the largest, most dangerous, and most powerful racing machines of all, the extreme expense of the boats and the fuel required to participate make it an expensive and elite sport.

Many different classes of boats, can compete in individual races, on the same course, at the same time. This may include single or twin piston engine V-bottom boats, single or twin piston engine catamaran style boats, four piston engine boats, and turbine boats.

In the USA, offshore powerboat racing is split between the OPA Races, SBI/APBA/UIM races and the OSS races.

Although there are team sponsors, the sport is still an amateur sport financed by a mixture of private funding and commercial sponsors. One of the benefits of sponsoring an offshore powerboat team is, that whereas in Formula One motor racing, 1 million dollars will only allow a small space, whereas in offshore powerboating, this covers the whole of the boat.

Depending on the class, speed of the power boat varies from 65 mph (105 km/h) to 190 mph (310 km/h).The sport is moving more to a circuit racing style also known as "run what you bring", which makes for a better TV & spectator experience, though there are still old fashioned endurance offshore racing classes.

Powerboat P1 , the UIM sanctioned world championship is the fastest growing powerboat series in the world. Founded in 2003 with 5 boats it now has 20+ teams from 11 countries.

Engines can be either petrol or diesel depending on the team choice or the manufacturer's recommendation.