St Cyriac's Church is a 14th-century Church of England church, located in the village of Lacock, Wiltshire.

The Norman architecture base to the current church, funded jointly by local landowners Edward of Salisbury of Lacock and William II, Count of Eu of Lackham, may have been built on the site of a previously established Saxon church. It is dedicated to a Norman saint, St. Cyriac. The interior has many later monuments to local land owners, including the Baynards, Bonhams, Crokes, Sharingtons, Talbots and Awdreys.