A bowling ball is a hard, spherical ball used to hit bowling pins in the sport of bowling.

Balls used in ten-pin bowling typically have holes for two fingers and the thumb. Balls used in five-pin bowling, candlepin bowling, and duckpin bowling have no holes and are small enough to be held in the palm of the hand.

In pin bowling, the goal is to knock over pins at the end of a lane, with either two or three balls per frame allowed to knock down all pins. A strike is achieved when all the pins are knocked down on the first roll, and a spare is achieved all the pins are knocked over on a second roll.

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