《百万富翁》（英语：Who Wants to Be a Millionaire?；新加坡译《百万大赢家》、港译《百万富翁》 ）是一个源自英国独立电视台的电视游戏节目，现于世界多处地方均有制作当地版本。参赛者需要正确回答连续15条四选一的多项选择题，若能全部答对，将可以获得一笔巨额奖金，通常是100万当地货币。以英国版《百万富翁》为例，最高奖金为一百万英镑。这个游戏节目是由英国导演David Briggs于1995年构思出来，再经过多年讨论和修改，于1998年在英国首播。播出后大受欢迎，被世界各地的电视台购下制作权和播映。

Who Wants to Be a Millionaire? (sometimes informally known as Millionaire) is an international television game show franchise of British origin, created by David Briggs, Mike Whitehill and Steven Knight. In its format, currently owned and licensed by Sony Pictures Television, large cash prizes are offered for correctly answering a series of multiple-choice questions of increasing (or, in some cases, random) difficulty. The maximum cash prize (in the original British version) was one million pounds. Most international versions offer a top prize of one million units of the local currency; the actual value of the prize varies widely, depending on the value of the currency.