Spanish 21 is a blackjack variant owned by Masque Publishing Inc., a gaming publishing company based in Colorado. Unlicensed, but equivalent, versions may be called Spanish blackjack. In Australia and Malaysia, an unlicensed version of the game, with no dealer hole card and significant rule differences, is played in casinos under the name "Pontoon". It was first introduced into Nevada casios in about 1995.

arbitragebetting australianpontoon baccarat bigsixwheel bingo blackjackswitch blackjack caribbeanstudpoker casinoholdem casinoonline casinowar casino casinogame casinos chinesepoker chuck-a-luck craps fan-tan faro fixed-oddsbetting fourcardpoker freepoker gambling keno letitride onlinecasino onlinepoker pachinko paigowpoker paigow parimutuelbettingpokergame pokergames pokeronline pokerstar pokerstars poker pyramidpoker redrog roulette sicbo slotmachines slots spanish21 sportsbetting tablegame teenpatti texasholdem texasholdembonuspoker threecardpoker two-up videolotteryterminal videopoker