Pinchbeck may refer to:
- People
- Christopher Pinchbeck (c.1670 – 1732), English watchmaker who developed an eponymous alloy; or his son also named Christopher (1710–1783)
- Daniel Pinchbeck, American author
- William Pinchbeck, American pioneer
- Placenames
- Pinchbeck, Lincolnshire, England
- Pinchbeck Engine, A drainage museum nearby
- Other
- Pinchbeck (alloy), an alloy made of copper and zinc