Thiney made her international debut on 28 February 2007 in a 2–0 victory over China.
During qualification for the UEFA Women's Euro 2009, she scored two goals against Slovenia and Serbia.
In the tournament, she scored her only goal in France's 1–5 group stage defeat to the eventual champions Germany.
France reached as far as the quarterfinals losing to the Netherlands 4–5 on penalties.
On 28 October 2009, Thiney scored her first career hat trick in a 2011 FIFA Women's World Cup qualification match against Estonia in a 12–0 victory.
Thiney finished the qualification campaign with a team-high 12 goals, including a goal in the team's 3–2 second leg World Cup playoff victory over Italy, which allowed France qualification to the competition.

At the World Cup, Thiney was the decisive player in the team's second group stage match against Canada scoring a double in a 4–0 win.
The victory allowed France progression to the knockout stage portion of the competition.
Thiney made her international debut on 28 February 2007 in a 2–0 victory over China. During qualification for the UEFA Women's Euro 2009, she scored two goals against Slovenia and Serbia. In the tournament, she scored her only goal in France's 1–5 group stage defeat to the eventual champions Germany. France reached as far as the quarterfinals losing to the Netherlands 4–5 on penalties. On 28 October 2009, Thiney scored her first career hat trick in a 2011 FIFA Women's World Cup qualification match against Estonia in a 12–0 victory. Thiney finished the qualification campaign with a team-high 12 goals, including a goal in the team's 3–2 second leg World Cup playoff victory over Italy, which allowed France qualification to the competition.
At the World Cup, Thiney was the decisive player in the team's second group stage match against Canada scoring a double in a 4–0 win. The victory allowed France progression to the knockout stage portion of the competition.
Gaëtane Thiney