Peter Kirby (died before October 13, 1788) was an early American pewtersmith active in New York City.
Kirby married Margaret Ellison on December 24, 1736, in New York City; their son was William Kirby, also a pewtersmith. He was appointed in 1759-1760 as the city's Assessor of North Ward and in 1765-1776 as Tax Collector of North Ward. His work is collected in the Metropolitan Museum of Art.