Geir Andersen (born February 12, 1964) is a Norwegian nordic combined skier who competed from 1983 to 1989. He won three medals at the FIS Nordic World Ski Championships with one gold (1984: 3 x 10 km team) and two silvers (1985: 15 km individual, 3 x 10 km team).
Andersen also finished 10th in the individual event at the 1984 Winter Olympics in Sarajevo. He had six individual victories in his career from 1984 to 1985.