St Mawnan and St Stephen's Church, Mawnan is a Grade II* listed[1] parish church in the Church of England Diocese of Truro in Mawnan, Cornwall, England, UK.

[3] In the 1880 restoration considerable portions of the north and south walls were rebuilt, and several new windows were inserted.

The chancel and east window of the north aisle were filled with stained glass, and in the north-east corner a new window of coloured glass was inserted in memory of M. Nowell Peters who died in 1880.

[4] The patron saint is Mawan, Mawnan or Mawganus, who appears to have settled in the neighbourhood in the 6th century.

There is a fragment of a cross head built into the north aisle wall; it was found in the churchyard in 1881.