Chilmark is a town located on Martha's Vineyard in Dukes County, Massachusetts, United States.

Chilmark had the highest median home sale price of any town or city in Massachusetts in 2013.

The new town was named for Chilmark, the ancestral home of the family of Governor Thomas Mayhew of Tisbury, in the English county of Wiltshire.

In August 2009, 2010 and 2011, President Barack Obama and his family vacationed in Chilmark, renting the Blue Heron Farm.

The town includes the island of Nomans Land, which lies southwest of Martha's Vineyard.

Long Beach, privately owned, runs along the southern side of Squibnocket Pond and technically connects the towns.

[6] The town has several sanctuaries and preserves, the largest of which being the Menemsha Hills Reservation just northeast of the village which shares that name.

The town has no direct access to the mainland via ferry or by air; Martha's Vineyard Airport is in neighboring West Tisbury, and the Steamship Authority ferries to Woods Hole are in Vineyard Haven, which is 12 miles (19 km) northeast of the town center, and in Oak Bluffs, 16 miles (26 km) away.

On the national level, Chilmark is a part of Massachusetts's 9th congressional district, and is currently represented by Bill Keating.

The town is represented in the Massachusetts Senate as a portion of the Cape and Islands district, which includes all of Martha's Vineyard, Nantucket and most of Barnstable County (with the exception of Bourne, Sandwich, Falmouth and Mashpee).

[22] All of Dukes County is patrolled by the Fifth (Oak Bluffs) Barracks of Troop D of the Massachusetts State Police.

The Town Hall, Tri-Town Ambulance, and the Fire Department share a building in the northern quadrant of the crossroads, the police station is located next to the Chilmark Tavern, and the post office and the town's Free Public Library occupy the southern.