In looking at the world boxing champions on the website of the www.IBOboxingrankings.com the USA leads the world in the number of world boxing champions in the WBA, WBC, WBO, IBF and IBO listing of world champions.
The USA has 12 world champions listed and this only counts with one belt not a champion with several belts like multi-champion Vasiliy Lomachenko of the Ukraine, and even if they live in the US this writer is listing the country they are from. Closely behind is Mexico with 9 world champions.
Following these two countries is the Philippines with 5, Japan the UK and South Africa with 4. The Ukraine, Nicaragua, Germany and Thailand have 2. With 1 is Cuba, France, Venezuela, Kazakhstan, Canada, Russia, Brazil, Dominican Republic, Argentina, Uzbekistan, Puerto Rico
USA boxers are super middleweight champions are IBF Caleb “Sweet Hands” Plant and WBC David “El Bandera Roja” Benavidez. WBC middleweight champion Jermall “Hit Man” Charlo. WBO middleweight champion Demitrius “Boo Boo” Andrade, WBC super welterweight champion Jermell “Iron Man” Charlo. WBC and IBF champion Errol “The Truth” Spence, Jr. and WBO champion Terence “Bud” Crawford. WBC and WBO super lightweight champion Jose Carlos Ramirez. IBF lightweight champion Teofimo “El Brooklyn” Lopez. IBF super featherweight champion Joseph “Jo Jo” Diaz. WBO super featherweight Jamel “Semper Fi” Herring. WBC featherweight champion “Mr.” Gary Russell, Jr.