René Guyon

René Charles Marie Guyon (/ɡwɪˈjɔːn/; French: [gɥi.jɔ̃]; 27 May 1876 – 1963) was a French jurist, best known for having written upon the topic of sexual ethics.

René Guyon was born at Sedan, Ardennes, and was involved in writing legal codes for Siam (present-day Thailand) and was the head judge of the supreme court of that country, where he was given the Thai name Phichan Bunyong (Thai: พิชาญ บุลยง). He died in 1963 in Bangkok.

The René Guyon Society, a now-defunct pro-pedophile organization, was named after him, though he did not found the society nor was he involved with it.