Britney: Piece of Me was the first concert residency by American entertainer Britney Spears, performed at The AXIS auditorium located in the Planet Hollywood Resort & Casino in Las Vegas, Nevada. The show, which opened on December 27, 2013, was initially set for two years; it was well received by critics and also achieved huge commercial success. The residency won the best of Las Vegas award in 2015 and 2017. In 2015, Spears extended her contract with Planet Hollywood for an additional two years, concluding the residency on December 31, 2017. After close to 146 performances, the show grossed $138 million from 900,000 tickets at an average price of $150.

A concert residency is a series of concerts, similar to a concert tour, but only performed at one location. Pollstar Awards defined residency as a run of 10 or more shows at a single venue. An artist who performs on a concert residency is called a resident performer. Concert residencies have been the staple of the Las Vegas Strip for decades, pioneered by singer-pianist Liberace in the 1940s and Frank Sinatra with the Rat Pack in the 1950s.