Y Mountain is a mountain located directly east of Brigham Young University (BYU) in Provo, Utah, United States. The Slide Canyon, or Y Mountain Trail, leads to a large block Y located 1.06 miles (1.71 km) from a parking area at the mountain's base with an elevation gain of 1,074 feet (327 m). This hillside letter was built over a hundred years ago as the insignia for BYU. For years the trail to the Y has been one of the most hiked trails in Utah Valley and provides a scenic view of Provo and Orem, the rest of the many cities in Utah Valley and Utah Lake. The trail is also regularly used by hikers, bikers, paragliders and hunters to access the backcountry in the Slide Canyon area.

The Brigham Young University (BYU) Cougars and the University of Utah (Utah) Utes have a longstanding intercollegiate rivalry. The annual college football game is frequently referred to as the Holy War. In the 1890s, when BYU was still known as Brigham Young Academy (BYA), the two schools started competing athletically. The schools have met continually since 1909 in men's basketball, and met once a year in football from 1922 to 2013, with the exception of 1943–45 when BYU did not field a team due to World War II. Both schools formerly competed in the Mountain West Conference, but both teams left the MWC in 2011—Utah joined the Pac-12 Conference and BYU became a football independent while joining the West Coast Conference for other sports.