Diósgyőr-Vasgyári Testgyakorlók Köre, more commonly Diósgyőri VTK is a Hungarian sports club from Diósgyőr district of Miskolc best known for its football team. Founded in 1910 by the local working class youth, the team plays in the second division of the Hungarian League and has spent most of its history in the top tier of Hungarian football. Diósgyőr is best known for its passionate supporters – in the past years, Diósgyőr had one of the highest average attendances in the Hungarian top division. The football club enjoyed its first golden age in the late 1970s and early 1980s, including a third place finish in the 1978–79 season of the Hungarian League and two Hungarian Cup triumphs in 1977 and 1980.

Diósgyőr is a historical town in Hungary, today it is a part of Miskolc. The medieval castle in Diósgyőr was a favourite holiday residence of Hungarian kings and queens; today it is a popular tourist attraction. The city part has a heavy industrial background. The football team of Miskolc is also named after Diósgyőr; their soccer stadium lies within the district.