Ladislav Kuna, a Slovak midfielder capped 47 times by the former Czechoslovakia, died on Wednesday at the age of 64, his old club Spartak Trnava said on its website.
Kuna, who played at the 1970 World Cup in Mexico, scored nine goals for the Czechoslovak team.
He spent most of his career with Spartak Trnava, who he led to the European Cup semi-finals against Ajax in 1969.
In the same year, he became the Footballer of the Year in Czechoslovakia, which peacefully split into the Czech Republic and Slovakia in 1993.
In 1971, Kuna played alongside the likes of Bobby Charlton and Gerd Mueller in a world stars team against the Soviet Union in a farewell game for the legendary Soviet goalkeeper Lev Yashin.