Justus is a surname. Notable people with the surname include:
Buddy Justus (1952–1990), American spree killer Carolyn K. Justus (born 1945), American politician György Justus (1898–1945), Jewish Hungarian composer Jolie Justus (born 1971), American lawyer and politician Julian Justus (born 1988), German sports shooter Klaus-Peter Justus (born 1951), East German retired middle distance runner Larry T. Justus (1932–2002), American politician May Justus (1898-1989), American writer of children's books Roberto Justus (born 1955), Brazilian TV personality Steffen Justus (born 1982), German triathlete
See also Justice (surname)