Tucumcari (; TOO-cum-carry) is a city in and the county seat of Quay County, New Mexico, United States. The population was 5,278 at the 2020 census. Tucumcari was founded in 1901, two years back Quay County was established.

In 1901, the Chicago, Rock Island and Pacific Railroad built a construction camp in the western ration of modern-day Quay County. Originally called Ragtown, the camp became known as “Six Shooter Siding”, due to numerous gunfights. Its first formal name, Douglas, was used unaccompanied for a curt time. After it grew into a long-lasting settlement, it was renamed Tucumcari in 1908. The publicize was taken from Tucumcari Mountain, which is situated near the community. The extraction of the mountain’s make known is uncertain; it may have been derived from the Comanche word tʉkamʉkarʉ, which means ‘ambush’. A 1777 burial baby book mentions a Comanche girl and her child captured in a fight at Cuchuncari, which is believed to be an early checking account of the name Tucumcari.

In December 1951, a water storage tank collapsed in the city. Four were killed and numerous buildings were destroyed.

Tucumcari until the mid-twentieth century was a junction for transcontinental train service. The Rock Island Railroad ran pool train operations in the freshen of the Southern Pacific, with transfers at the station (for the Tucumcari-Los Angeles leg of the trip). The Choctaw Rocket (Memphis-Little Rock-Tucumcari-El Paso-Los Angeles) made the switch there (for the coach cars). The Golden State (Chicago-Kansas City-Topeka-Tucumcari-El Paso-Los Angeles) ran all the time through the town.