The Dallas Sidekicks are an American professional indoor soccer team based in Allen, Texas, a suburb of Dallas. The team plays its home games in the Credit Union of Texas Event Center. They kicked off their inaugural season as a member of the Professional Arena Soccer League on November 3, 2012. The Sidekicks segued to the new Major Arena Soccer League (MASL) for its inaugural season on October 25, 2014. The team took a leave of absence on September 19, 2017, for one season to re-organize. On July 24, 2018, it was announced that the Dallas Sidekicks would return for the 2018–2019 season.

Indoor soccer or arena soccer is a five-a-side or six-a-side version of minifootball, derived from association football and adapted to be played in walled hardcourt indoor arena. Indoor soccer, as it is most often known in the United States and Canada, was originally developed in these two countries as a way to play soccer during the winter months, when snow would make outdoor play difficult. In those countries, gymnasiums are adapted for indoor soccer play. In other countries the game is played in either indoor or outdoor arenas surrounded by walls, and is referred to by different names.