Christoffer Mafoumbi (born 3 March 1994) is a Congolese footballer who plays as a goalkeeper.
Born in Roubaix, Mafoumbi joined Lille OSC's youth setup in 2005, aged 11. In 2010, he moved to RC Lens, being later assigned to the reserves in Championnat de France amateur in the following year.
Mafoumbi made his senior debut on 26 May 2012
