The club were relegated from the Championship following a 1–0 loss to Plymouth Argyle at home on 5 April 2024.

On 17 May, The Millers announched their first pre-season friendly, against Mansfield Town.

[49] In June, Premier League side Sheffield United was added to the pre-season schedule.

[51] Also confirmed by the club was a week-long warm weather training camp in Murcia, Spain between 8 and 15 July.

[54] Win Draw Loss Fixtures As a Championship side, Rotherham entered the FA Cup in the third round and were drawn away to Fulham.