The Steel City Derby is a local derby between Sheffield United and Sheffield Wednesday, the two professional football league teams in the city of Sheffield, England.

Sheffield United Football Club is a professional football club based in Sheffield, South Yorkshire, England. The club competes in the Premier League, but will play in the 2024–25 EFL Championship following their relegation from the 2023–24 Premier League. They are nicknamed "the Blades" due to Sheffield's history of cutlery production. The team have played home games at Bramall Lane since their formation. For most of the club's history, United have played in red and white striped shirts with black shorts. Their main rivals are Sheffield Wednesday, with whom they contest the Steel City derby.