Luangpho Yai (Thai: หลวงพ่อใหญ่, pronounced [lǔa̯ŋ pʰɔ̂ː jàj]), also known as Phra Phutta Rattana Mongkhol Maha Munee (Thai: พระพุทธรัตนมงคลมหามุนี, RTGS: Phra Phuttharattanamongkhon Maha Muni), and The Great Buddha of Roi Et, is the fourth-tallest statue in Thailand.

Located in the Wat Bhurapha Phiram temple in Roi Et Province, this statue stands 59.2 metres (194 ft) tall (or 67.55 metres (221.6 ft) tall, including the base).

It's assumed that the local sculpture focused on his faithful belief rather than the outside beauty.

The statue was built by the order of the 5th abbot of the Wat Bhurapha Piram temple, Phra Ratcha Preechayana Munee over the course of 8 years at a cost of approximately 7,000,000 baht.

The formal name, Phra Phuttha Rattana Mongkhol Maha Munee (พระพุทธรัตนมงคลมหามุนี), translates to the "Great Buddha, the Precious and Auspicious Sage," from Sanskrit/Pali varabuddha ratanamaṅgala mahāmuni.