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|Full name||Grégory Bettiol|
|Date of birth||30 March 1986|
|Place of birth||Villefranche-sur-Saône, France|
|Height||1.80 m (5 ft 11 in)|
|2005–2006||Olympique Lyonnais (reserve team)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 30 June 2014.
Since the age of 14, he was trained in the youth sections and player development program of Olympique Lyonnais.
Bettiol was known by the club's followers for his prowess in the ranks of the Olympique Lyonnais' junior amateur team, playing in the CFA 2. In April 2006, it was announced by Olympique Lyonnais' president Jean-Michel Aulas that he would be made to sign a one-year professional contract with the club alongside fellow young hope and France U-18 international Mourad Benhamida.
Bettiol is considered part of the young generation of promising players formed by Olympique Lyonnais who were signed by the club (sometimes before being sold to other outfits) like : Jérémy Berthod, Karim Benzema, Hatem Ben Arfa, Mourad Benhamida, Bryan Bergougnoux, and Jérémy Clément.
Bettiol was sold to Troyes AC at a fee of €330,000. He made his debut for Troyes in their 1-0 win over Guingamp coming on as a substitute. Bettiol scored his first goal on 24 August 2007 in Troyes' 2-0 win over Bastia.
- 2006 : Champion de France des réserves
- 2005 : Finalist of the Coupe Gambardella
- 2005 : Champion de France 18 ans