The San Gregorio Magno Parish (Filipino: Simbahan ng Parokya ni San Gregorio Magno; Spanish: Iglesia Parroquial de San Gregorio Magno), also known as Majayjay Church and St. Gregory the Great Parish Church, is one of the oldest Roman Catholic churches in the Philippines located in the municipality of Majayjay in Laguna. It is recognized by the National Museum as a National Cultural Treasure (Level 1).