Marianne Dahlmo (born January 5, 1965) is a former Norwegian cross-country skier who competed from 1985 to 1994.
She won a silver medal in the 4 × 5 km relay at the 1988 Winter Olympics in Calgary and also finished 8th in the 20 km event in those same games.
Dahlmo also won two medals in the 4 × 5 km relay FIS Nordic World Ski Championships (silver: 1987, bronze: 1989).
She also finished fifth in the 10 km in 1987 and fifth again in the 5 km in 1991.
She also won four World Cup Events during the late 1980s as well.
She represented the club Bodø & Omegn IF.