Monika Zehrt (later Landgraf, born 29 September 1952) is a retired East German sprinter who specialized in the 400m.

At the 1972 Olympics she won gold medals in the individual 400m and 4 × 400m relay, setting an Olympic and a world record, respectively.

After retiring in 1974, she earned a degree in external trade and a leading position at a furniture company.

She married, but then divorced Jochen Landgraf, a 400m hurdler.

This article about an athletics Olympic medalist for Germany is a stub.