Phra Pathommachedi or Phra Pathom Chedi is a stupa in Thailand. The stupa is located in the Wat Phra Pathommachedi Ratcha Wora Maha Wihan (Thai: วัดพระปฐมเจดีย์ราชวรมหาวิหาร), a temple in the town center of Nakhon Pathom, Nakhon Pathom Province, Thailand.