Peter Kirk

• Peter Kirk (businessman), British-born American mill-owner, founder of the City of Kirkland, Washington, USA
• Sir Peter Kirk (English politician), British Conservative MP and government minister
• Peter Kirk (MP for Carrickfergus), UK MP from the Irish constituency of Carrickfergus 1835–1847
• Peter Kirk (director), Australian film director

Characters

• Peter Kirk, a character in The Grudge
• Peter Kirk, nephew of James T. Kirk in the fictional Star Trek universe