Meshech Weare (June 16, 1713 – January 14, 1786) was an American farmer, lawyer, and statesman from Seabrook and Hampton Falls, New Hampshire.

Meshech was born to Deacon Nathaniel Weare and his second wife, Mary Waite, in what was then the Third Parish, New Hampshire.

During this time he began to study law, starting with the books passed down to him from his father and grandfather, who were former lay Judges in the provincial court.

The house in which Weare lived was built in 1737 by Samuel Shaw, and is now listed on the National Register of Historic Places.

In September 1772, Weare served as one of the four judges in the trial of the participants in the Pine Tree Riot, an early act of rebellion against British authority in the Colonies.

Although the defendants were found guilty (of assaulting a sheriff who had been enforcing laws against harvesting white pine reserved to the Crown), the light fines assessed by the court were seen as encouraging other such acts, including the Boston Tea Party.

Weare was a leader in the drafting of this document, which served as the basic instrument of government for the ensuing eight years or until the adoption of a second and more permanent constitution in 1784.

It operated both at the state and (through a network of town committees of safety) at the local level, and was virtually a law unto itself while the legislature was not in session.