Dahmer is a German surname. People with the surname include:
Hugo Dahmer (1918–2006), German fighter pilot during World War II
Jeffrey Dahmer (1960–1994), American serial killer
John Dahmer (1937–1988), Canadian politician
Vernon Dahmer (1908–1966), American civil rights activist murdered by the KKK in 1966
Helmut Dahmer (born 1937), German sociologist (Helmut Dahmer on German Wikipedia)