Marie-George Buffet (née Kosellek; born 7 May 1949) is a French politician. She was the head of the French Communist Party (PCF) from 2001 to 2010. She joined the Party in 1969, and she served in the government as Minister of Youth Affairs and Sports from 4 June 1997 to 5 May 2002. Buffet was re-elected on 16 June 2002 to another five-year term in the National Assembly as a representative of Seine-Saint-Denis.