Port Kenyon is an unincorporated community in Humboldt County, California. It is located northwest of Ferndale, at an elevation of 13 feet (4 m).
A post office operated at Port Kenyon from 1886 to 1899 and from 1903 to 1913. The town was founded by John Gardner Kenyon in 1876. The town was initially a major point of shipping for locally raised dairy products; it also had a fish cannery. After silting of the Salt River and repeated flooding, the port declined in the 1890s.