ARCO Arena was an indoor arena located in Sacramento, California, United States. Opened in 1988, it was the home of the Sacramento Kings of the National Basketball Association (NBA) from 1988 to 2016. It hosted nearly 200 spectator events each year. The arena was named for ARCO, at the time in 1988, a Los Angeles-based independent oil and gas company that today is now a brand owned by Findlay, Ohio-based Marathon Petroleum. It was later named for Sleep Train, a chain of mattress and bed retailers based in Rocklin, California, that at the time of the agreement was a subsidiary of Mattress Firm, a Houston-based retailer that has since re-branded all Sleep Train stores as Mattress Firm. Several major entertainers have performed at the venue before its closure including Bruno Mars and Linkin Park.

The Sacramento Kings are an American professional basketball team based in Sacramento, California. The Kings compete in the National Basketball Association (NBA) as a member of the Pacific Division of the Western Conference. The Kings are the oldest team in the NBA, and the first team in the major professional North American sports leagues located in Sacramento. The team plays its home games at the Golden 1 Center. Their best seasons to date in the city were in the early 2000s, including a very successful 2001–02 season when they had the best record in the NBA at 61–21.