Unity is a town in Waldo County, Maine, United States. The population was 1,889 at the 2000 census. The town is the service center for the northern portion of Waldo County. Outside the county, it is best known as the home of the Maine Organic Farmers and Gardeners Association and Unity College, which the townspeople founded in 1965 to offset the economic effects of the declining chicken farming industry. As of 2007, the college is the town's largest employer.
When originally settled by Quakers, the town was known as Twenty-Five Mile Pond Plantation. The name came from its being located on a pond twenty five miles from Fort Halifax in Winslow. The name was changed to Unity upon incorporation as a town in 1804.
During 2008-2009, eight Amish families have been welcomed into the community.