Caswell is a lost settlement in Greens Norton parish Northamptonshire, England, approximately 3 miles (5 km) north-west of Towcester, 8 miles (12.9 km) from Northampton and 12 miles (19 km) from Milton Keynes. It consists almost entirely of Caswell Park science and technology park, which has developed since the 1940s around a 19th-century farmhouse.