René Sommerfeldt (born 2 October 1974 in Zittau) is a German cross-country skier who competed from 1994 to 2010.

He won two medals in the 4 × 10 km relays at the Winter Olympics with a silver in 2006 and a bronze in 2002.

He also won the 50 km event at the Holmenkollen Ski Festival in 2004, becoming the second German to win this prestigious honor (the first was Gerhard Grimmer in 1970/71).

Sommerfeldt will become a coach in cross-country skiing for the German team.

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