Blanc selected Debuchy in his final 23-man squad for the European Championships in Poland and Ukraine on 29 May 2012. He started the match and played every minute as a right back in "Les Bleus" opening group match against England, helping his side to a 1–1 draw, in which his performance was hailed as "terrific". He played the full 90 minutes of France's second group match, a 2–0 win over co-hosts Ukraine on 15 June. Debuchy also played the full 90 minutes of France's last group match against Sweden, which France lost 2–0. He started in the quarterfinal match against Spain (the French lost the match 2–0), but was replaced by Jérémy Ménez in the 64th minute.