Hemmo is a masculine given name and a surname. Notable people with the name are as follows:
Given name Hemmo Kallio (1863–1940), Finnish actor Hemmo Riihimäki (born 2003), Finnish footballer Hemmo Silvennoinen (1932–2002), Finnish ski jumper
Surname Albert Hemmo (born 1934), Israeli basketball player Roland Hemmo (born 1946), German actor