What is the name of the poem by J.R.R. Tolkien that features the character Tom Bombadil?

The poem collection by J.R.R. Tolkien that features Tom Bombadil is The Adventures of Tom Bombadil.

The Adventures of Tom Bombadil is a 1962 book containing sixteen poems. Its title poem presents Bombadil, a mysterious figure who also appears in The Fellowship of the Ring. The collection includes poems connected to Middle-earth as well as works presented as Hobbit or other in-world traditions.

The book expands the literary setting around Tom Bombadil, Goldberry, and the Old Forest. It also demonstrates Tolkien’s interest in invented folklore, rhyme, and the idea that poems can survive as fragments from different fictional cultures.

The title is sometimes confused with “The Old Man Willow” or with Bombadil’s chapters in The Fellowship of the Ring. The latter is the novel in which readers meet him during Frodo’s journey, while the 1962 volume is the dedicated poetry collection.