Orem is a city in Utah County, Utah, United States, in the northern part of the state. It is adjacent to Provo, Lindon, and Vineyard and is about 45 miles (72 km) south of Salt Lake City. Orem is one of the principal cities of the Provo-Orem, Utah Metropolitan Statistical Area, which includes all of Utah and Juab counties. The population was 84,324 at the 2000 census, while the 2010 population was 88,328 making it the fifth-largest city in Utah. Utah Valley University is located in Orem. The Orem Owlz of the minor league baseball Pioneer League play their home games at the college.

Orem uses the slogan "Family City USA." In 2010 Forbes rated it the 5th best place to raise a family. Also, Time magazine rated the Provo-Orem area as the best place to live for spiritual well-being, due to a high population of members of The Church of Jesus Christ of Latter-day Saints.

According to the United States Census Bureau, the city has a total area of 18.4 square miles (48 km2), all of it land. The City of Orem is located near the eastern shore of Utah Lake. It borders Provo, Utah on the east and south, Vineyard, Utah on the west, and is located at the base of Mount Timpanogos.

As of 2011 the 88,112 residents of Orem had a racial and ethnic composition of 89.3% white, 0.9% black or African American, 0.9% Native American, 1.6% Asian, 0.5% Pacific Islanders, 4% non-Hispanics reporting some other race, 2.9% two or more races reported and 14.8% Hispanic, as Orem has a large Mexican American community with other Latinos residing in the city. This contrasts with the census of 2000, which showed a racial makeup of 90.80% White, 0.33% African American, 0.73% Native American, 1.45% Asian, 0.86% Pacific Islander, 3.64% from other races, and 2.18% from two or more races. Hispanic or Latino of any race were 8.56% of the population.