Marlies Rostock (born 20 April 1960) is a former East German cross-country skier who competed from 1978 to 1980.

She won a gold medal in the 4 × 5 km relay at the 1980 Winter Olympics in Lake Placid, New York.

[1] Rostock also won a silver medal in the 4 × 5 km relay at the 1978 FIS Nordic World Ski Championships in Lahti.

All results are sourced from the International Ski Federation (FIS).

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