The Ultimate Fighter: Team Rousey vs. Team Tate (also known as The Ultimate Fighter 18) is the eighteenth U.S.-based installment of the Ultimate Fighting Championship (UFC)-produced reality television series The Ultimate Fighter.

The series was officially announced by the UFC in March 2013 with the revelation that for the first time women will serve as coaches and the contestants will be both male and female. Women's Bantamweight Champion Ronda Rousey was selected to coach against the winner of the Miesha Tate and Cat Zingano bout on The Ultimate Fighter 17 finale in April 2013. Zingano won the fight, but a few weeks prior to filming was removed from the coaching position due to an injury and replaced by Tate.

The season was the first to air on Fox Sports 1 and debuted on September 4, 2013, and also the first time that it had been seen on BT Sport in the UK debuting on September 5, 2013 at 11PM also.

* Gorman got injured and was replaced on episode 2 by Fisette

* Bollinger did not make weight and was expelled. Gutierrez advanced directly to the semifinals.
** Gutierrez did not make weight and was expelled. Grant advanced directly to the finale.

Fans voted to award the following $25,000 bonus awards to fights that took place during the TUF 18 season:

The Ultimate Fighter: Team Rousey vs. Team Tate Finale (also known as The Ultimate Fighter 18 Finale) was a mixed martial arts event held by the Ultimate Fighting Championship. It took place on November 30, 2013, at the Mandalay Bay Events Center in Las Vegas, Nevada.

The event was expected to be headlined by a UFC Flyweight Championship bout between the current champion Demetrious Johnson and top contender Joseph Benavidez. The two previously met at UFC 152 in the finals of the inaugural Flyweight Tournament, with Johnson winning the bout via split decision. However, on November 10, it was announced that Anthony Pettis withdrew from the main event on UFC on Fox 9 and the Johnson/Benavidez bout was moved to that event.