Monika Kallies (later Leschhorn; born 31 July 1956) is a German rower.
Kallies was born in 1956 in Stralsund and was a member of SC Dynamo Potsdam / Sportvereinigung (SV) Dynamo. At the 1975 World Rowing Championships in Nottingham she won a gold medal with the women's eight. She won a gold medal at the 1976 Summer Olympics with the women's eight.