Pool shark or pool sharks (also Pool Shark, Pool Sharks, poolshark, Poolshark, PoolShark, etc.) may refer to:
- A pool (pocket billiards) player who engages in hustling and/or sharking; often incorrectly used to simply mean "good pool player"; originally pool sharp
- Pool Sharks a.k.a. The Pool Shark (1915), the first film featuring W. C. Fields
- The Pool Shark (album), a 1970 honky-tonk country album by Dave Dudley
- "The Pool Shark" (song), a 1970 single from the Dudley album
- Pool Shark (arcade game), a 1977 coin-operated video game by Atari
- "Pool Shark", a 1987 song by third-wave ska band The Toasters from their album Skaboom
- Pool Sharks (pinball), a 1990 Bally Midway machine
- PoolShark (input device), a 1990s computer input device for using a cue stick with computer games, especially cue sports (pool, snooker, billiards) simulations, via a PC's serial port
- "Pool Shark", a 1994 short track by ska-punk and reggae-rock band Sublime, from their album Robbin' the Hood
- Pool Shark (EP), a 1995 six-track CD by the band V.Card on Allied/Caroline Rec.
- Pool Shark, a 1999 pool (pocket billiards) simulator video game, originally released as Actua Pool, developed by Gremlin Interactive and Mirage Ltd. for PlayStation and Windows; re-released in 2007 as Underground Pool for Nintendo DS
- Pool Shark 2, the above game's 2004 sequel, developed by Blade Interactive for PlayStation 2, Windows and Xbox
- "Pool Shark" (Drake & Josh episode), 2004
- "Pool Shark", a 2009 song by rockabilly and ska-punk band The Cherry Poppin' Daddies, from their album Skaboy JFK
- Pool shark or sand shark, nickname for automated cleaning devices for swimming pools, which often have shark-themed names such as Great White, Tiger Shark, Li'l Shark, etc.