The Alsea are a Native American tribe of Oregon. Alsea may also refer to:
Alsea (company), a Mexican restaurant business Alsea Bay, a body of water near the city of Waldport, Oregon Alsea Bay Bridge, a bridge near Waldport Alsea, Oregon, an unincorporated community in Oregon Alsea River, a river in Oregon Alsea Falls, a waterfall on the Alsea River in Oregon Alsean languages, a language family spoken along the Oregon Coast USS Alsea (ATF-97), an Abnaki-class fleet ocean tug
See also Chronicles of Alsea, a science fiction book series