Following is the top-10 nations according to ranked medals or by gold, then silver, then bronze*

[caption id="attachment_151902" align="alignnone" width="456"] Team USA at Friday’s (23) Tokyo 2020 Opening Ceremony[/caption]

(Key: No. / Nation / Gold / Silver / Bronze / Total)

1. United States (USA) / 1,022 / 795 / 706 / 2,523

2. Russia (RUS) / 590 / 486 / 480 / 1,556

3. Germany (GER) / 428 / 444 / 474 / 1,346

4. Great Britain (GBR) / 263 / 295 / 293 / 851

5. China (CHN) / 224 / 167 / 155 / 546

6. France (FRA) / 212 / 241 / 263 / 716

7. Italy (ITA) / 206 / 178 / 193 / 577

8. Hungary (HUN) / 175 / 147 / 169 / 491

9. Australia (AUS) / 147 / 163 / 187 / 497

10. Sweden (SWE) / 145 / 170 / 179 / 494

[caption id="attachment_151903" align="alignnone" width="356"] US swimmer Michael Phelps who won the highest number of medals in the history of Summer Olympics; a total of 28, including 23 gold, three silver, and two bronze. He is the most decorated Olympian ever becoming the most successful athlete in four Games in a row; 2004 (in Athens), 2008 (Beijing), 2012 (London) and 2016 (Rio)[/caption]

* There are disputes over this medals tally on varying grounds

* U.S.A. has been the most successful nation ever, with a combined total of more than 2,500 medals in 27 Olympic Games

* The second most successful team is Russia, who have represented as Russian Empire, Soviet Union, and Russian Federation from time to time

*When the total medal hauls of the Soviet Union, Russia and the Russian Empire are combined, they still fall short of the US' tally by almost one thousand medals

* The third most successful Olympic team is Great Britain, who have participated in all 28 Olympic Games since 1896

* Germany has represented as East Germany and West Germany

* China is in overall fourth place with 224 gold medals