A post oak bluff is a bet in no-limit or pot-limit poker which is an attempt to steal the pot in a way that holds little risk for the player making the bet.

A player executing the post oak bluff bets a small amount relative to the size of the pot, in order to create the impression that he is trying to lure the other player into the pot (as if he had a winning hand--this kind of bet with a strong hand is called a "here kitty kitty" bet). When successful, the other player(s) fold rather than fall into the perceived trap.

The term itself carries derogatory connotations because the play is often seen as "gutless," to quote Doyle Brunson who popularized the term in his book Super System, and who claims that he never makes the play.