Hartung is a surname. Notable people with the surname include:

• Billy Hartung (actor) (b. 1971), American actor and dancer

• Clint Hartung (1922–2010), former Major League Baseball player

• Edgar Hartung (born 1956), West German sprint canoer

• Eugen Hartung (1897–1973), Swiss painter

• Frederick Hartung (1857?), Member of the Wisconsin State Assembly

• Fritz Hartung (18831967), political and constitutional historian of Germany

• Georg Hartung (1821–1891), German geologist

• Hans Hartung (1904–1989), German-French abstract painter

• Horst von Pflugk-Harttung (1889–1967), German intelligence officer and spy for Nazi Germany

• Jim Hartung (1960–2026), American gymnast, Olympic champion

• John Hartung (b. 1947), Associate Professor of Anesthesiology at the State University of New York

• Kaylee Hartung (b. 1985), American television journalist

• Max Hartung (b. 1989), German fencer

• Otto Schmidt-Hartung (1892-1976), German general

• Paul J. Hartung (b. 1961), Professor of behavioral sciences, Northeast Ohio Medical University

• Thomas Hartung (1970-2024), German politician (SPD;The Left)

• Valery Hartung (b. 1960), Russian politician

• Wilfried Hartung (b. 1953), German swimmer

• Willi Hartung (1915–1987), Swiss painter.

• William D. Hartung (b. 1955), director of the Arms Trade Resource Center at the World Policy Institute