It was their second season back in the Scottish Premiership, having been promoted from the Scottish Championship at the end of the 2019–20 season.

The club also competed in the League Cup and Scottish Cup.

United finished their opening season back in the Scottish Premiership in 9th-place.

[1] On 25 May 2021, it was reported that manager Micky Mellon had left the club by mutual consent,[2] and Tam Courts was appointed in June 2021.

[3] Win Draw Loss Postponed