Tyler is a city in and the county seat of Smith County, Texas in the United States. The city is named for President John Tyler in recognition of his support for Texas's admission to the United States. The 2000 census recorded the city's population to be 83,650, while in 2008 it was estimated to have reached 108,772. Tyler is the principal city of the Tyler Metropolitan Statistical Area, which is part of the larger Tyler-Jacksonville combined statistical area and includes surrounding communities such as the Town of Flint, the Town of Gresham, and the City of Noonday.

Tyler has been nicknamed the "Rose Capital of America" because of its large role in the rose-growing industry; about 20% of commercial rose bushes produced in the U.S. are grown in Tyler and Smith County and more than half of the rose bushes are packaged and shipped from the area. It has the nation's largest municipal rose garden and hosts the Texas Rose Festival each October, which draws more than 100,000 spectators.

In 1985, the international Adopt-a-Highway movement originated in Tyler when, after appeals by local Texas Department of Transportation officials, the local Civitan chapter adopted a 2-mile (3-km) stretch of U.S. Highway 69. Tyler is also home to the Caldwell Zoo.

Increasingly, Tyler is becoming recognized as an ideal city for retirees. A GreatPlacesToRetire.com survey of retirement cities lists Tyler as one of America's top retirement cities.