St Julian's Church is an Anglican church in Kingston Buci (also known as Kingston by Sea) in the district of Adur, one of seven local government districts in the English county of West Sussex. Kingston Buci was a Saxon-era village near the English Channel coast between Southwick and Shoreham-by-Sea; little remains from that period, and modern residential development has obscured the old boundaries between the settlements, but the church retains its mostly 13th-century appearance and serves a parish which retains the ancient Kingston Buci name.