The 2017 Cleveland Gladiators season was the 18th season for the franchise in the Arena Football League, and their eighth in Cleveland. The Gladiators played at the Quicken Loans Arena. The Gladiators drew an average home attendance of 10,173 in the 2017 AFL season.

The 2017 Arena Football League season was the 30th season in the history of the Arena Football League (AFL). Prior to the start of the season, the league contracted to five teams. Due to this, for the first time since 1991, the league was not divided into conferences or divisions. The 14-game regular season began on April 7, 2017, when the two new teams, the Baltimore Brigade and the Washington Valor, faced off in the Verizon Center, and ended on August 5, 2017, when the Tampa Bay Storm lost against the Philadelphia Soul.