Hillberg is a surname. Notable people with the surname include:
Antonia Hillberg (born 1997), German politician Linnéa Hillberg (1892–1977), Swedish actress Robert Hillberg (1917–2012), American firearms designer
Aviation Hillberg Helicopters, an American aircraft manufacturer based in Fountain Valley, California
Weapons Hillberg Carbine, a light rifle concept for the US armed forces during WW2 See also Hilberg