|Date of birth||6 March 1937|
|Place of birth||Montfort-en-Chalosse, France|
|Date of death||1 January 1968(aged 30)|
|Place of death||Saint-Sever, France|
|Height||1.72 m (5 ft 8 in)|
|Weight||72 kg (159 lb)|
|Notable relative(s)||André Boniface (brother)|
|Rugby union career|
Born in Montfort-en-Chalosse, Aquitaine, he mainly played at centre, and played for Stade Montois and U.S. Montfortoise. He won the French Championship with Stade Montois in 1963, and was runner up with them in 1959. He also won the Challenge Yves du Manoir in 1960, 1961, and 1962. Stade Montois' stadium was named after him following his death.
He played 18 Tests with his brother André Boniface including one Test against New Zealand (the All Blacks) in which the All Blacks had two sets of brothers playing. He helped France with the Five Nations in 1959 - their first outright Championship victory. In 1968 - whilst returning home from a club match - he was killed in a traffic accident.
- "André Boniface". rugbyhalloffame.com. Archived from the original on 2012-09-08. Retrieved 2007-06-22.
- "BONIFACE" (in French). finalesrugby.com. Archived from the original on 2007-12-15. Retrieved 2007-06-22.
- "BONIFACE Guy" (in French). ffr.fr. Archived from the original on 2007-09-27. Retrieved 2007-06-22.
- Guy Boniface at ESPNscrum