Adriaen Courtsen Block was a Dutch private trader, privateer, and ship's captain who is best known for exploring the coastal and river valley areas between present-day New Jersey and Massachusetts during four voyages from 1611 to 1614, following the 1609 expedition by Henry Hudson. He is noted for possibly having named Block Island, Rhode Island, and establishing early trade with the Native Americans, and for the 1614 map of his last voyage on which many features of the mid-Atlantic region appear for the first time, and on which the term New Netherland is first applied to the region. He is credited with being the first European to enter Long Island Sound and the Connecticut River, and to determine that Manhattan and Long Island are islands.

Block Island is an island of the Outer Lands coastal archipelago, located approximately 9 miles (14 km) south of mainland Rhode Island and 14 miles (23 km) east of Long Island's Montauk Point. The island is coterminous with the town of New Shoreham, Rhode Island and is part of Washington County. The island is named after Dutch explorer Adriaen Block, and the town was named for Shoreham, Kent, in England.