Chamuakpet Hapalang (Thai: ฉมวกเพชร ห้าพลัง; born: August 10, 1962 in Amphoe Si Racha, Chonburi province, eastern Thailand) is a retired Thai Muay Thai fighter who won five different weight classes, was champion of the Lumpinee Stadium and the Rajadamnern Stadium and was also a professional boxer. He fought in the early 80s-the mid 90s. He had a southpaw stance and was best known for his powerful and precise knee strikes which made him receive the nickname "Computer Knee Striker".