Marius Costel Gherman (born 14 July 1967) is a Romanian artistic gymnast who represented Romania at the 1988 Olympic Games and at the 1992 Olympic Games. His best event was the horizontal bar for which he medaled bronze at the 1988 Olympic Games and silver at the 1993 World Championships. He is also a bronze continental medalist on vault and on horizontal bar.
After retiring from competitions Gherman worked in United Kingdom as a gymnastics coach.