Deal or No Deal is an Australian game show that originally aired on the Seven Network from 13 July 2003 to 4 October 2013. It was the first international version of the game show, after the original Miljoenenjacht from the Netherlands. It was the first of the versions to use the Deal or No Deal name. It was hosted by Andrew O'Keefe for its initial 10-year run.

Many changes were made to Deal or No Deal during its run. These included, among others, changing from a weekly format to a daily format, which resulted in the reduction of the top prize from $2,000,000 to $200,000 in 2004; interactive features inviting home viewers to play along with "Double Deal Friday"; and additional special features added to the game (such as "Double or Nothing" and "Super Case"). The show included many special episodes including several hour-long prime-time specials (such as the "Test of the Psychics Special" and the "Unluckiest Players Special") and the successful Dancing with the Deals which occurred in conjunction with Dancing with the Stars.

No new episodes were produced between October 2013 and September 2015, with only repeat episodes airing at 5:00 pm weeknights during this time period. It was announced in March 2014 that no new episodes would be produced, and in August 2015 it was announced that the show, along with Million Dollar Minute, would be axed and replaced by a new one-hour game show titled The Chase Australia.In October 2023, it was announced that Network 10 would be reviving the series in 2024, with new host Grant Denyer. The revived version of the game show airs at 6:00 pm weeknights following the flagship 5:00 pm edition of 10 News First and as the lead-in program to The Project starting on 29 January 2024. This new format features 22 numbered briefcases instead of the traditional 26. The top prize for this edition is $100,000. This is also the first series since 2004 to not include a car as a featured prize on the board. And the number of cases per round changed from 6-5-4-3-2-1-1-1-1 to 6-5-3-2-2-1-1, and the correct guess, lowered to $250.