South Hero is a town in Grand Isle County, in the Islands & Farms region of northern Vermont.

Originally, North Hero, South Hero and Grand Isle were granted to Ethan Allen, Samuel Herrick and 363 other Revolutionary War veterans as a single town known as Two Heroes. It's possible the name referred to Ethan and Ira Allen, however while Ethan and Herrick were first in the grant Ira's name was considerably lower in the list.

In 1798, Two Heroes was divided into three parts: North Hero (the entire north island), Middle Hero, and South Hero (the two sharing the southern island). Residents of the southern island were not happy sharing a single representative in the legislature, so in 1810, Middle Hero was given complete autonomy and renamed Grand Isle.

Some notable people from the area include: Jewett W. Adams, the fourth governor of Nevada; Ebenezer Allen, owner of the first settlement at South Hero & cousin of Ethan Allen; and Asa Lyon, a congressman.