List of Grand Slam singles champions by country

This is an all-time list of winners of the four Grand Slam men's and women's singles tennis tournaments, organized by country. The year of the first win in each tournament is shown in parentheses. Each player's first grand slam tournament win is shown in bold. The greatest number of wins in each country (in the total column) is shown in bold.

[[belarus|🇧🇾]] 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. This affected Aryna Sabalenka as she competed for no nation at the time of her victory.

Total Grand Slam titles by country

 * 🇺🇸: 351
 * 🇦🇺: 166
 * 🇬🇧: 98
 * 🇪🇸: 45
 * 🇩🇪: 40
 * 🇫🇷: 38
 * : 28
 * 🇸🇪: 26
 * 🇷🇸: 25
 * : 18
 * 🇷🇺: 13
 * 🇧🇪: 11
 * 🇧🇷: 10
 * : 9
 * 🇦🇷: 7
 * 🇨🇿: 7
 * 🇳🇿: 6
 * 🇮🇹: 6
 * 🇷🇴: 5
 * 🇵🇱: 5
 * 🇯🇵: 4
 * 🇳🇴: 4
 * : 3
 * 🇪🇬: 3
 * 🇦🇹: 2
 * 🇨🇳: 2
 * 🇭🇺: 2
 * : 2
 * 🇧🇾: 2
 * 🇨🇦: 1
 * : 1
 * : 1
 * 🇪🇨: 1
 * 🇰🇿: 1
 * : 1
 * 🇲🇽: 1
 * : 1