Red dog, also known as red dog poker or yablon, is a game of chance played with cards. It is a variation of acey-deucey or in-between. While found in some land casinos, its popularity has declined, although it is featured at many casinos online. Confusingly, there are other card-based games of chance by the same name that are unrelated to the rules described here.

The deck used to play red dog is the standard, fifty-two-card variety. The game may be played with anywhere from one to eight decks, with an increasing number of decks decreasing the house edge — the house's advantage begins at 3.155% with one deck, but falls to 2.751% when eight decks are used. This is in contrast with some other casino card games, such as blackjack, where a higher number of decks used will increase the house edge.