| Birth Date: | 1941 4, df=y |
| Birth Place: | Frederiksberg, Denmark |
| Height: | 1.82m (05.97feet) |
| Weight: | 78kg (172lb) |
| Sport: | Rowing |
| Club: | Lyngby Roklub, Lyngby-Taarbæk |
| Show-Medals: | yes |
Peter Fich Christiansen (born 4 April 1941) is a retired Danish rower who had his best achievements in the coxless pairs. In this event, he won two European medals, in 1964 and 1965 together with Hans Jørgen Boye; they also finished in fifth place at the 1964 Summer Olympics. At the 1968 Games, Christiansen rowed with Ib Larsen and won a bronze medal. Four years later, he competed in the coxless fours and ended in sixth place.