List of Open Era Grand Slam champions by country

This is a list Grand Slam tennis champions during the Open Era, organized by country. First career wins and highest total counts are boldfaced, and first wins per category are listed in parentheses. The gold-highlighted years with symbol ☆ denote Career Grand Slam achievement years. When the whole box is highlighted yellow, it denotes a "Career Boxed Set". The † sign indicates additional Grand Slam titles achieved before the Open Era.

Belarus

 * Note - On 1 March 2022, the WTA announced that players from Belarus will not be allowed to compete under the name or flag of Belarus following the 2022 Russian invasion of Ukraine.

Serbia and Montenegro (1992–2006)

 * Federal Republic of Yugoslavia (28 April 1992 – 3 February 2003)
 * Serbia and Montenegro (4 February 2003 – 3 June 2006)