Coordinates: 43°06′N 82°00′W / 43.100°N 82.000°W Forest is a community in Lambton Shores, Ontario near Sarnia and Lake Huron in Lambton County. It has a population of 2,876 (2011 Census) and a land area of 5.26 km2.
Forest has a high school, North Lambton Secondary School. This facility includes a large gymnasium, and cafeteria as well as meal preparation facilities. As well as a high school there are elementary schools in the public (Kinnwood Central Public School) and separate (St. John Fisher) school systems.
Recreational facilities include an enclosed arena for hockey or ringette, a community centre for dances held by the town with baseball and soccer fields, a lawn bowling club, public tennis courts and an agricultural society with grounds used for a fall fair and occasional campsites. There are a dozen golf courses within a 20-mile drive.
Forest Amphitheatre is a natural amphitheatre located at the conservation area (Esli Dodge Conservation Area) in the south part of the town. The stage is situated on a small island, and spectators sit on the surrounding hillsides on lawn chairs or blankets. Hundreds attend outdoor performances there each summer. An annual performance of a religious play (entitled: The Promise), acted in by members of the town, was held annually from 1995 until 2005. In 2006 a play entitled "Their Finest Hour" was performed, and since 2007 country music concerts entitled "Music In the Valley" have been held there.
Forest is situated on what was once dense forest. When the Grand Trunk Railway was built through where the town now sits, the station was named for the dense forest. Hickory Creek, which meanders through the town, provided water for the station in those days when wood and water were essential to the operation of steam locomotives.