Karin Ingrid Lamberg-Skog (born 17 January 1961 in Uppsala) is a former Swedish cross-country skier who competed during the 1980s.
She won a bronze medal in the 4 × 5 km relay at the 1987 FIS Nordic World Ski Championships in Oberstdorf and finished 18th in the 10 km event at those championships.
Lamberg-Skog's best individual finish at the Winter Olympics was 16th in the 5 km event at Sarajevo in 1984.
Her best career individual finish was fifth in a 10 km event in Finland in 1988.