Ace Deuce in craps is a roll where the dice show 1 and 2. Together, that makes 3.

Players and dealers use this name as a quick way to call the result. Ace means one. Deuce means two. Craps has a lot of terms like this, and they help describe rolls faster at the table.

You will usually hear Ace Deuce around the come-out roll. At that stage, a 3 can affect bets in different ways depending on what the player chose. For some bets it is a losing result. For others it is neutral or simply part of the table logic.

In simple terms, Ace Deuce is just a standard craps name for the number 3. It matters more for understanding table language and bet outcomes than for any advanced strategy.