List of Rotherham United F.C. seasons

[1] After the merger, the club was elected to play in the Football League Third Division North.

[3] Their furthest Football League Trophy run saw the club win the competition twice, in the 1995–96 season defeating Shrewsbury Town 2–1 in the final; and in the 2021–22 season defeating Sutton United 4–2 after extra time in the final.

[4] As of the end of 2022–23, the club's first team has remained in the English Football League since its formation.

[1] In total the club has spent 27 seasons in the second tier of the English football league system, 47 in the third and 13 in the fourth.

The table details their achievements in first-team competitions for each completed season since their first appearance in the Football League in 1925–26.