Who Wants to Be a 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, contestants tackle a series of multiple-choice questions to win large cash prizes in a format that twists on many game show genre conventions – only one contestant plays at a time, similar to radio quizzes; contestants are given the question before deciding whether to answer, and have no time limit to answer questions; and the amount offered increases as they tackle questions that become increasingly difficult. The maximum cash prize offered in most versions of the format is an aspirational value in local currency, such as £1 million in the UK or ₹75 million in India.

Regis Francis Xavier Philbin was an American television presenter, talk show host, game show host, comedian, actor, and singer. Once called "the hardest-working man in show business", he held the Guinness World Record for the most hours spent on US television.