Northington Grange is a mansion near New Alresford, Hampshire, England. It is owned by English Heritage and is open to the public. The village of Northington is nearby.
Set in a landscaped park with an ornamental lake, it is a home built originally in 1670 by architect William Samwell for Sir Robert Henley. It was remodelled in a Greek revival style by the architect William Wilkins in 1804 and 1809: this involved remodelling the 17th century house. The portico is of the Greek Doric columns, six in width and two deep, loosely based on the Parthenon.
Visitors have included George IV, Lord Tennyson and Thomas Carlyle.