| Christian Keller | |
| Fullname: | Christian Keller |
| Strokes: | Freestyle, individual medley |
| Club: | Sportgemeinschaft Duisburg |
| Birth Date: | 3 August 1972 |
| Birth Place: | Essen, North Rhine-Westphalia, West Germany |
| Height: | 1.88m (06.17feet) |
| Medaltemplates: | |
Christian Keller (born August 3, 1972, in Essen, North Rhine-Westphalia). is a former medley and freestyle swimmer from Germany, who competed in four consecutive Summer Olympics for his native country, starting in 1992. Four years later the three-time European Junior Champion won the bronze medal with the men's 4×200 m freestyle relay. Keller was named German Swimmer of the Year for two consecutive years: 1994 and 1995.