Watcharapong Klahan (Thai à ¸§à ¸±à ¸Âà ¸£à ¸Âà ¸Âà ¸¨à ¹ à ¸Âà ¸¥à ¹Âà ¸²à ¸«à ¸²à ¸Â) is a Thai former professional footballer and football coach.
Klahan played for Thailand at the 1997 FIFA U-17 World Championship in Egypt.