Ents are a race of beings in J. R. R. Tolkien's fantasy world Middle-earth who closely resemble trees. They are similar to the talking trees in folklore around the world. Their name is derived from the Anglo-Saxon word for giant.

The Ents appear in The Lord of the Rings as ancient shepherds of the forest and allies of the free peoples of Middle-earth during the War of the Ring. The Ent who figures most prominently in the book is Treebeard, who (credibly) claims to be the oldest creature in Middle-earth. At the time The Lord of the Rings takes place, there are no young Ents (Entings) because the Entwives (female Ents) were lost. The Ents are akin to Huorns, whom Treebeard describes as a transitional form of trees which become animated or, conversely, as Ents who grow more "treelike" over time.