Willem Buys (1661–1749) was acting Grand Pensionary of Holland in the summer of 1746. He was pensionary of Amsterdam (1693–1725) and first secretary of the estates of Holland (1726–1749). He was elected Fellow of the Royal Society in 1706.
- Occupation
- politician, lawyer, diplomat, envoy extraordinary and minister plenipotentiary
- Position held
- director of the Sociëteit van Suriname
- Citizenship
- Dutch Republic
- Born
- May 27, 1661
- Died
- February 18, 1749