Llancillo Church is a Grade II*-listed former church in Herefordshire, England, near the Welsh border at grid reference SO36622557. Situated amongst trees and fields, it was dedicated to Saint Peter and alternatively to St Tysilio. The church was built in the 11th century and has been revised and restored since, including a Victorian restoration in the 1890s. It contains a font from the 13th century and 17th century pulpit. One of the bells is believed to have been cast in the 13th century or earlier.