Littlehampton is a town, seaside resort, and civil parish located in the Arun District of West Sussex, England. It is situated on the English Channel on the eastern bank of the mouth of the River Arun.
The town is positioned approximately 52 miles (84 km) south-south-west of London, 19 miles (31 km) west of Brighton, and 10 miles (16 km) east of Chichester.