Harth is a surname. Notable people with the surname include:
Alfred 23 Harth, German artist C. Ernst Harth (born 1970), Canadian actor Sidney Harth (1925–2011), American classical violinist and conductor Yoram Harth (born 1958), Israeli dermatologist
See also Miguel Harth-Bedoya (born 1968), Peruvian conductor Hearth Iranian high-aspect-ratio twin-hull vessels (HARTH)