Prasat Phanom Wan (Thai: ปราสาทพนมวัน, pronounced [prāː.sàːt pʰā.nōm wān]), also locally known as Wat Phanom Wan (Thai: วัดพนมวัน, pronounced [wát pʰā.nōm wān]) is an unfinished ancient Khmer Hindu temple in the area of Mueang Nakhon Ratchasima District, Nakhon Ratchasima Province.

In the north gate, it enshrines a standing Buddha statue in the posture of forgiveness according to the Ayutthaya style.

The sanctuary is surrounded by laterite wall, the southwest area is a sandstone stupa called "Prang Noi" (Thai: ปรางน้อย, pronounced [prāːŋ nɔ́ːj]) with the large Buddha statue inside.

Outside the area comprises gopura (entrance) situated in the form of tall tower in four directions.

There is also the pavilion to welcome Jayavarman VII or his representative who should have arrived at Phanom Wan in the 13th century to worship the Buddha statue.