Aldwick is a civil parish in the Arun district of West Sussex, England, and has expanded to form a seaside suburb immediately west of the seaside town Bognor Regis. The parish includes a smaller named locality which shares in and contributes to its resources, Rose Green.
It had, briefly, a home of the constitutional monarch of the British Empire when King George V convalesced (with his wider family regularly visiting) at Craigweil House in 1929, before its demolition. This stay led directly to Bognor attaining the suffix 'Regis'. The area around this has throwback relatively ornate architecture of the early 20th century and a large conservation area.
Aldwick has three churches: one Anglican dedicated to St Richard, one Roman Catholic dedicated to St Anthony of Viareggio, and the Free Church (Baptist). There are a few shops and several miles of beach.