Battle Riot III was a professional wrestling event produced by Major League Wrestling (MLW) that took place on July 10, 2021, at the 2300 Arena in Philadelphia, Pennsylvania. It was MLW's first event since its hiatus due to the COVID-19 pandemic to feature live ticketed fans, the last being the MLW vs AAA Super Series in 2020. It was the third event under the Battle Riot chronology.

Major League Wrestling (MLW) is an American professional wrestling promotion based in New Rochelle, New York. The promotion was founded in 2002 in Philadelphia, Pennsylvania by former WWE writer Court Bauer. The promotion markets its product as "Hybrid Wrestling", with its roster featuring a mix of different wrestling styles.