The American Quarter Horse Association (AQHA), based in Amarillo, Texas, is an international organization dedicated to the preservation, improvement and record-keeping of the American Quarter Horse. The association sanctions many competitive events and maintains the official registry. The organization also houses the American Quarter Horse Hall of Fame and Museum and sponsors educational programs. The organization was founded in 1940 in Fort Worth, Texas, and now has nearly 234,627 members, over 32,000 of whom are international.

Amarillo is a city in the U.S. state of Texas and the seat of Potter County. It is the 14th-most populous city in Texas and the most populous city in the Texas Panhandle. A portion of the city extends into Randall County. The estimated population of Amarillo was 200,393 as of April 1, 2020, comprising nearly half of the population of the panhandle. The Amarillo metropolitan area had an estimated population of 308,297 as of 2020.