Rita Blankenburg (later Schmidt, born 22 February 1942) is a retired German speed skater. She has been coached by Erich Löwenberger. Schmidt represented her nation at the 1964 Winter Olympics in the 3000 m event and finished in 17th place. She also competed also at the World Allround Speed Skating Championships for Women in , finishing 28th overall. Between 1959 and 1967 she competed sixteen times at national championships (several national events per year), winning a bronze medal in the 500m in 1966.