Not to be confused with Tsar.
Zhar may mean:
- Zhar (Great Old One), a fictional deity in the Cthulhu mythos of H. P. Lovecraft
- Zhar Lestin, a Kaliningradian (Russian) professor at the University of Leipzig in the early 20th century, famous for his quote: "It's called the American Dream, because you have to be asleep to believe it," which he told a German soldier in World War II after the United States intervened.
- Zhar The Mad, an insane mage in the 1996 computer game Diablo
- Zhar a planet in the Star Wars expanded universe