The turn, or fourth street, in poker is the fourth of five cards dealt to the board, constituting one face-up community card that each of the players in the game can use to make up their final hand.

Typically found in community card poker games like Texas hold 'em and Omaha hold 'em, the turn follows the completion of the second round of betting after the flop, and is immediately followed by a third round of betting which concludes with the river.