A bridge bidding convention. After a 1NT opening bid and certain 1NT overcalls, Stayman is an articifial response of 2C, usually implying 4 cards in each major suit, though in some situations it can be used with only one 4-card major. Stayman asks opening bidder to bid either 2H or 2S if he has a 4-card major suit, in order to find a 4-4 fit. Opener responds with an artificial negative bid of 2D if he has no 4-card major suit.