Francis William Pettygrove (1812 – October 5, 1887) was a pioneer and one of the founders of the cities of Portland, Oregon, and Port Townsend, Washington. Born in Maine, he re-located to the Oregon Country in 1843 to establish a store in Oregon City. Later that year he paid $50 for half of a land claim on which he and Asa Lovejoy laid out a town named Portland after the port city in Pettygrove's home state.