A forest was a large area with a thick covering of trees. Smaller tree-covered areas were known as woodland or woods. A rainforest was a type of forest characterized by the abundant amount of rainfall it received. Earth's oceans also featured kelp forests.
The colony on Terra Nova was surrounded by several forests. In 2151, Lieutenant Malcolm Reed of Enterprise NX-01, saw a person in the forest and followed him until he arrived at a cave entrance. He informed Captain Jonathan Archer over com about his sighting. (ENT: "Terra Nova")
On Rinax, there was a large forest behind Neelix's childhood home. He would explore the forest every day with Alixia and his other sisters. In the forest, they would make up stories. (VOY: "Once Upon a Time")
Some known forests included:
- The Great Forest, part of the Talaxian afterlife
- Sherwood Forest, the home of Robin Hood and his outlaws
- The Forest of Forever, a setting in The Adventures of Flotter series of holoprograms
- The Bestri Woods on Bajor