List of Sutton United F.C. seasons

[6] In 1991 United's spell in the conference was ended with relegation back to the Isthmian League Premier Division.

The club finished the 1998–99 Isthmian League season as champions returning to the Conference after an eight-year absence.

[7] After four seasons United experienced the third relegation of their history, rejoining the Isthmian Premier League.

[9] United's ended their third season as champions of the Isthmian Premier League and were promoted to the Conference South.

[15][16] As members of the English Football League Sutton have been eligible to enter the EFL Cup, their furthest run so far in the competition saw them reach the third round in the 2023–24 season.