To provide a water bowling implement allowing a pin mounting board to be easily set anywhere in an ordinary pool.

The water bowling implement is used for a water bowling game with a plurality of pins 29 disposed at prescribed intervals approximately at the height position of the water surface. In the bowling game, a player whose lower half body is underwater throws a circular disk at a pin 29 from the position a prescribed distance apart from the pin 29, and competes with other players for the number of knocked pins 29. The water bowling implement includes a plurality of pin sockets 2 for the pins 29 to be individually mounted and held, and a plurality of supports 1 raised underwater to support the respective pin sockets 2 approximately at the height of the water surface.