The Church of St Alphonsus, also known as Novena Church, is a Roman Catholic church located at 300 Thomson Road in Novena, Singapore. It was built in 1950 and is dedicated to Saint Alphonsus Liguori, a Doctor of the Church known for his contributions to moral theology and the founding of the Congregation of the Most Holy Redeemer. The church is famous for its Novena devotions to Our Lady of Perpetual Help, which are held every Saturday and draw many worshippers from all over the world.