Xfinity Mobile Arena is a multi-purpose indoor arena located in Philadelphia. It serves as the home of the Philadelphia Flyers of the National Hockey League, the Philadelphia 76ers of the National Basketball Association , and the Philadelphia Wings of the National Lacrosse League. The arena lies at the southwest corner of the South Philadelphia Sports Complex, which includes Lincoln Financial Field, Citizens Bank Park, and Stateside Live!.

The arena officially seats 20,478 for NBA and NCAA basketball and 19,173 for NHL hockey and indoor NLL lacrosse. With additional standing-room admissions available in luxury and club-box suites, the total paid capacity increases. The arena has 126 luxury suites, 1,880 club-box seats, and a variety of restaurants and clubs (both public and private) available for use by patrons. In addition, the offices, studios, and production facilities of NBC Sports Philadelphia are all located in the facility.