Percival Proctor Baxter (November 22, 1876 – June 12, 1969) was an American politician and philanthropist from Maine. The son of canning magnate and Portland, Maine mayor James Phinney Baxter, he served as the 53rd Governor of the U.S. state of Maine from 1921 to 1925. A noted philanthropist, he donated several pieces of land to the public domain including Baxter Woods (Portland), Mackworth Island State Park (Falmouth), and Baxter State Park (Piscataquis County).