Bognor Regis is a seaside resort town and civil parish in the Arun district of West Sussex, on the south coast of England. It is 55.5 miles (89 km) south-south-west of London, 24 miles (39 km) west of Brighton, and 6 miles (10 km) south-east of the city of Chichester. Other nearby towns include Littlehampton east-north-east and Selsey to the south-west. The nearby villages of Felpham, briefly home to the poet William Blake, and Aldwick are now suburbs of Bognor Regis, along with those of North and South Bersted.

Bognor Regis was originally named just “Bognor”, being a fishing (and one time, smuggling) village until the 18th century, when it was converted into a resort by Sir Richard Hotham.

Bognor was a part of the ancient parish of South Bersted in the county of Sussex, attaining parish status separate from South Bersted in 1828. Until 1894 it formed part of the Hundred of Aldwick, an ancient division of Chichester Rape. From 1894 to 1974 it was part of Bognor Urban District (Bognor Regis Urban District from 1929), and since 1974 it has been a part of Arun District.