Underhill Vermont is a town located in Chittenden County, at the foot of Mount Mansfield, Vermont's highest peak, in the Burlington region of the state, just east of Burlington, Essex & Jericho, Vermont. On the Underhill-Jericho town line is Underhill Flats, one of the few villages in the state which lie in two towns.

Some noted residents of Underhill include: Thomas Cale, non-voting congressman from the District of Alaska; Pat Dealy, Major League Baseball player; Bernard Joseph Leddy, US federal judge; and Richard Phillips, sea captain.