The 2020–21 season was Ayr United's 3rd consecutive season in the Scottish Championship after being promoted from league one in the 2017–18 season.

On 2 October 2020, the SPFL confirmed that the Scottish Challenge Cup had been cancelled for the upcoming season.

[1] Ayr began the season on 6 October in the League Cup group stages with the Scottish Championship season set to begin on 17th October.

Club chairman Lachlan Cameron stepped down from his position in January 2021 after 13 years in the role with local businessman David Smith being appointed in his place.

[2] Win Draw Loss Postponed Results