The 2016–17 Major Arena Soccer League season was the ninth season for the league and the third since six teams from the former Major Indoor Soccer League defected to what was formerly called the Professional Arena Soccer League. The regular season started on October 29, 2016, and ended on March 5, 2017. Each team played a 20-game schedule. The defending champions were the Baltimore Blast. The Blast repeated in 2016–17, defeating the Sonora Suns in the Ron Newman Cup, 2–1.