Pethay Promjan is a 21-year-old professional football player from THA. He currently plays for Ratchaburi FC, wearing the number 33 shirt. He plays primarily as a Defender. His current market value is estimated at 25K €.

His most recent move was a from Suphanburi FC to Ratchaburi FC on 2025-07-05.

Throughout the Thai League 1 2025-2026, Pethay Promjan featured in 13 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.