St Margaret South Elmham is a village and civil parish in the north of the English county of Suffolk.

It is 4 miles (6.4 km) south-west of the market town of Bungay in the East Suffolk district.

[4] The parish council is operated jointly with Flixton and St Cross South Elmham.

[9] South Elmham Hall, a medieval moated site and former palace of the Bishop of Norwich, is on the eastern edge of the parish, extending into St Cross South Elmham.

The site is a scheduled monument and the hall a Grade I listed building.