The 2015–16 season was Gillingham's 123rd season in their existence and third consecutive season in League One.[1] Along with League One, the club competed in the FA Cup, League Cup, Football League Trophy and the regional Kent Senior Cup. The season covers the period from 1 July 2015 to 30 June 2016.
On 17 June 2015, the fixtures for the season were announced.[32]