The Sims 3 is a strategic life simulation video game in The Sims franchise, originally created by Maxis. It was released on DVD for Microsoft Windows and on CD for Macintosh, using cider emulation, on June 2, 2009 in North America, on June 4, 2009 in Australia and on June 5, 2009 in Europe. A collectors edition of the game containing exclusive downloadable content, a plumbob-shaped USB drive and a Hints and Tips guide created by Prima, was also released. An expansion pack titled The Sims 3 : World Adventures has also been announced. A version for the Playstation 3 and Xbox is being speculated.

The Sims 3 is built upon the same concept as its predecessor. Players control their Sims in various activities and form relationships in a manner similar to real life. The Sims 3, like The Sims and The Sims 2, does not have a defined final goal; gameplay is open-ended. This title also features a "living neighborhood" where all Sims age at once.

The Sims 3 proved to be instant success selling 1.4 million copies in its first week and dominated the sales charts over a month later. Critics issued mostly positive reviews; The Sims 3 gained an 86% score from aggregator Metacritic.