On 17 November 2007, Kadlec was called up to the
Czech national team in a
UEFA Euro 2008 qualifying against
Slovakia, and debuted in a 3–1 victory where he scored an own goal. Kadlec scored his first goal in the same 3–1 victory, this time against
Scotland on 30 May 2008. On 16 June 2012, against
Poland in the European Championship, Kadlec headed a ball off the line in the dying seconds, preserving the Czechs' spot in the quarter-finals of the tournament. The striker had beaten goalkeeper
Petr Čech and appeared to be headed to the inside of the far post; if it had been scored, Poland would ensure a draw, and the Czech Republic would be eliminated from the tournament. ==Sponsorship==