Manfred Herweh (born June 14, 1954) is a former Grand Prix motorcycle road racer from Germany. He had his best year in 1984 when he won four races riding a Rotax-powered Real 250cc motorcycle. Herweh ended the season in second place behind Christian Sarron. He retired after the 1989 season.
Herweh is the last person to win a 350cc Grand Prix race, at the 1982 German Grand Prix.