Apidej Sit-Hirun (September 1941 – April 4, 2013), born Narong Yaenprateep, was a famous muay Thai fighter. Born in Samut Songkhram, Thailand, Sit-Hirun was best known for his powerful kicks. In one fight, he broke both of Sompong Charoenmuang's arms, and forced the fighter to retire. He is considered the hardest kicker in muay Thai history. Apidej simultaneously held no less than seven muay Thai and boxing titles for a period during the 1960s. Thereafter, he was acclaimed as a national hero and Muay Thai Fighter of the Century by HRH King Bhumibol Adulyadej. After his retirement, Apidej taught as an instructor at the Fairtex school outside Bangkok, Thailand alongside modern champions such as Yodsaenklai Fairtex and Kaew Fairtex. He died of lung cancer at the age of 72 on April 4, 2013, at Phramongkutklao Hospital, Bangkok.
- มะเร็งคร่า จอมเตะ'อภิเดช ศิษย์หิรัญ' - ข่าวไทยรัฐออนไลน์ (in Thai). Thai Rath. April 4, 2013. Retrieved 7 June 2013.
- "All Time Top Muay Thai Champions". Archived from the original on 2009-03-15. Retrieved 2007-02-26. Cite uses deprecated parameter
- Apidej Sit Hrun: The World's Best Kicker Archived September 23, 2008, at the Wayback Machine
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