Cape Jellison is a 1,600-acre (6.5 km2) peninsula that juts into Penobscot Bay on the coast of Maine. In colonial times it was known as Wasaumkeag Point. It is part of the town of Stockton Springs, between Searsport and Bucksport, in the upper mid-coast region of the state. It was the site of the first port facility built by the Bangor and Aroostook Railroad.