Seton Portage is a community on a narrow strip of land between Anderson Lake and Seton Lake in Squamish-Lillooet Regional District, British Columbia. The community is home to two Seton Lake First Nation communities at either end of the portage and a non-native recreational community between them. Local services include a post office, fire department, library, and general store, among other small businesses. The community is also the location of Seton Portage Historic Provincial Park, a small provincial park protecting a historically significant stretch of railway.