St James Church, Ashmansworth, is believed to have been built around the middle of the 12th century, to which date the nave belongs. The chancel dates from the end of the same century. Windows have been inserted at various dates and the east wall was rebuilt in 1745. Wall paintings, mainly discovered in the 1800s and early 1900s, depict the life of Jesus, and probably date from the 1200s to the 1600s. The village church is dedicated to Saint James the Great. It is now a Grade I listed building.