St Margaret's is the Anglican parish church of Cley next the Sea, Norfolk, in the deanery of Holt, the Archdeaconry of Lynn and the Diocese of Norwich.

It is the largest church in the Blakeney Haven area, with a nave to match, and was rebuilt from the 1320s to the mid-1340s.

[1] St Margaret's is a nationally important building, with a Grade I listing for its exceptional architectural interest.

[3] In 2008 a white-crowned sparrow, an American bird not usually seen in the United Kingdom, was spotted in Cley.

To commemorate the event an image of the bird was included in a window at St Margaret's.