Miss Universe 2007, the 56th Miss Universe pageant, was won by Riyo Mori of Japan. It took place on 28 May 2007 at the National Auditorium in Mexico City, Mexico. 77 delegates competed for the title, previously held by Puerto Rico's Zuleyka Rivera.

The pageant was held almost two months prior to when it was held in 2006, although the event had generally been staged between late May and early June since 2001. Miss Universe 2006 Zuleyka Rivera reigned for little more than ten months, one of the shortest in the history of the title. Contestants began to arrive in Mexico on 30 April 2007 and were to be involved in a number of appearances and events prior to the final competition.