Gerhard Sommer (born 24 June 1921) is a former SS-"Untersturmführer" (Second Lieutenant) in the 16th SS Panzergrenadier Division "Reichsführer-SS". He was involved in the massacre of 560 civilians on 12 August 1944 in the Italian village of Sant'Anna di Stazzema. He is on the Simon Wiesenthal Center's list of most wanted Nazi war criminals.