The Nagcarlan Underground Cemetery (Filipino: Libingan sa Ilalim ng Lupa ng Nagcarlan) is a national historical landmark and museum in Barangay Bambang, Nagcarlan, Laguna supervised by the National Historical Commission of the Philippines. It was built in 1845 under the supervision of Franciscan priest, Fr. Vicente Velloc as a public burial site and its underground crypt exclusively for Spanish friars, prominent town citizens and members of elite Catholic families. It is dubbed as the only underground cemetery in the country.