Weizmann or Weizman is a surname. Notable people with this surname include:
- Chaim Weizmann, a chemist, statesman, President of the World Zionist Organization, first President of Israel and founder of a research institute in Israel which eventually became the Weizmann Institute of Science
- Weizmann Institute of Science, an institute of higher learning and research in Rehovot, Israel
- Faisal-Weizmann Agreement, an agreement signed as part of the Paris Peace Conference, 1919
- Weizmann organism, a commercially valuable bacterium, included in the genus Clostridium
- WEIZAC (Weizmann Automatic Computer), the first computer in Israel, and possibly the first large-scale, stored-program, electronic computer outside the US and Europe
- Ezer Weizman, the seventh President of the State of Israel (1993–2000)
- Maria Weizmann, a sister of Israeli politician and notable scientist Chaim Weizmann
- Martin Weitzman, economist and Professor of Economics at Harvard University
- Vera Weizmann, wife of Chaim Weizmann, medical doctor and a Zionist activist
See also