The 1985 BMW Open was a Grand Prix Tennis Circuit tournament held in Munich, West Germany which was played on outdoor clay courts. It was the 12th edition of the tournament and was held form 6 May through 12 May 1985. Joakim Nyström won the singles title.
Joakim Nyström defeated Hans Schwaier 6–1, 6–0
- It was Nystrom's 1st title of the year and the 7th of his career.
Mark Edmondson / Kim Warwick defeated Sergio Casal / Emilio Sánchez 4–6, 7–5, 7–5
- It was Edmondson's 1st title of the year and the 37th of his career. It was Warwick's 2nd title of the year and the 24th of his career.