Waser is a quarter in the district 3 of Winterthur, Switzerland.
Waser may also refer to:
- Anna Waser (1678–1714), Swiss painter
- Hedwig Bleuler-Waser (1869−1940), founder of the Swiss Federation of Abstinent Women
- Heini Waser (1913–2008), Swiss painter (full name: Urs Heinrich Otto Waser)
- Hugo Waser (born 1936), Swiss Olympic rower
- Johann Heinrich Waser (1600–1669), a mayor of Zürich, Switzerland
- Maria Waser (1878–1939), Swiss writer
- Stephan Waser (1920–1992), Swiss Olympic bobsledder