Alvin is an unincorporated locality just north of the head of Pitt Lake in the Lower Mainland of southwestern British Columbia, Canada.

In 1959 a new post office opened at the confluence of Fish Hatchery Creek and the Pitt River 4 miles (6.4 km) upstream from the original site.

There is still a logging camp in the valley, operated by The Teal Jones Group, which has a sawmill in Surrey.

The issue came to a head in 2005 when the Pitt River shifted course and began eroding the dump, sending debris downstream.

[3] Alvin’s unofficial sister unincorporated community is Lund, British Columbia.