Ai là triệu phú is a Vietnamese game show based on the original British format of Who Wants to Be a Millionaire?. The show is hosted by Lại Văn Sâm. The main goal of the game is to win 150 million đồng by answering 15 multiple-choice questions correctly. There are four lifelines - fifty fifty, phone a friend, ask the audience and ask three people from the audience. Ai là triệu phú? is broadcast from January 4, 2005 to today. It is shown on the Vietnamese TV station VTV3 on every Tuesday at 8PM.
No one in this version has won the top prize, however a contestant in September 2008 and a pair of contestants in November 2008 had reached the final question and ultimately walked away. The answer of the former one wound up being correct.
This show's graphics are based closely to the Australian version of the show.
A new version called Ai là triệu phú - Ghế nóng with Hot Seat format was started on September 7, 2010 and ended on June 28, 2011.
On July 5, 2011, the original version came back as a replacement for the Hot Seat format.