Original Joma trainingsshirt Sheffield United FC 2017/18

The 2017–18 season was Sheffield United's 129th season in their history and marked their return to the Championship, following a six-year stay in the third tier. Along with the Championship, the club also competed in the FA Cup and EFL Cup.

Before the season, many EFL fans, Sheffield Wednesday fans amongst them, tipped the Blades for a season of struggles in and around the bottom 3. United defied this by finishing 10th, and chasing the play-offs all season long.

The season covered the period from 1 July 2017 to 30 June 2018.