Hopton-on-Sea is a village, civil parish and seaside resort on the coast of East Anglia in the county of Norfolk. The village is 4 miles (6.4 km) south of Great Yarmouth, 5 miles (8.0 km) north-west of Lowestoft.

St Margaret's Church is the parish church of Hopton-on-Sea in the English county of Norfolk. It is dedicated to St Margaret of Antioch. St Margaret is also the dedication of the former church, which was destroyed by fire in 1865. The ruins of the former church remain standing, and are still consecrated. Both the old and new churches are Grade II* listed. Until 1974, Hopton-on-Sea was called Hopton ; the formal name for the benefice remains Hopton. The church is in the Diocese of Norwich, and is within the deanery of Lothingland and archdeaconry of Norfolk.