The Covenant of the Town of Dedham, Massachusetts, is signed

Dedham ( DED-əm) is a town in, and the county seat of, Norfolk County, Massachusetts, United States. Located on Boston's southwestern border, the population was 25,364 at the 2020 census.

First settled by English colonists in 1635 and incorporated in 1636, Dedham established the first public school in America in 1643. Dedham is home to the Fairbanks House, the oldest surviving timber-frame house in the United States. On January 1, 1643, by unanimous vote, Dedham authorized the first taxpayer-funded public school, "the seed of American education." The first man-made canal in North America, Mother Brook, was created in Dedham in 1639.

The town took an active part in the American Revolution and was home to the Dedham Liberty Pole in the late 18th century.