Justin Smith may refer to:
Entertainment Justin Smith (actor), Australian television and stage actor Justin Smith (poker player) (born 1988), American poker player Justin Smith (presenter) (born 1968), Australian journalist, radio presenter, producer and writer Justin Smith (born 1978), American hip hop music producer known as Just Blaze Justin Smith, member of the singing group Jericho Road
Sports Justin Smith (basketball) (born 1999), American basketball player Justin Smith (defensive end) (born 1979), former American football defensive end Justin Smith (linebacker) (born 1979), American football player Justin Smith (rugby league) (born 1977), Australian rugby league player Justin Smith (soccer) (born 2003), Canadian soccer player
Other Justin Smith (milliner) (born 1978), British hat maker Justin A. Smith (1818–1879), New York politician Justin B. Smith (born 1969), American businessman at Bloomberg Justin D. Smith (born 1985), American lawyer and judge on the United States Court of Appeals for the Eighth Circuit Justin E. H. Smith (born 1972), Canadian-American philosopher and author Justin Harvey Smith (1857–1930), American historian Justin Smith, one of the prison officers killed in the 2017 Pasquotank County prison murders