Ungar is a surname and may refer to:
- Hermann Ungar (1893 – 1929), a Bohemian writer of German language and an officer in the Ministry of Foreign Affairs of Czechoslovakia
- Shmuel Dovid Ungar (1886 – 1945), Rav of Nitra, Slovakia
- Jay Ungar, an American musician and composer
- Stu Ungar (1953 – 1998), a professional poker and gin rummy player
- David Ungar, an American engineer
- Mark Ungar (1980 - present), a field scientist
Read more about Ungar: Other