By Ken Hissner: From The Ultimate Encyclopedia of Boxing, by Harry Mullan the following will be the first champions from each country:
Algeria: World Middleweight champion Marcel Cerdan, 110-4 (65), 1948.
America: Welterweight champion Paddy Duffy, 31-3-16 (17), 1888 from Boston, MASS.
Antigua: WBC Light Middleweight champion, 30-4-1 (24), 1979.
Argentina: Flyweight champion Pascual Perez, 84-7-1 (57), 1954.
Australia: World Bantamweight champion Jimmy Carruthers, 21-4 (13), 1952.
Austria: Light Heavyweight champion Jack Root, 48-3-3 (28), 1903.
Bahamas: WBC Light Middleweight champion Elisha Obed, 91-22-4 (60), 1975.
Barbados: World Welterweight champion Joe Walcott, 87-24-24 (57), 1901.
Belgium: Light Heavyweight champion Gustav Roth, 111-11-12 (24), 1936.
Brazil: Bantamweight and Featherweight champion Eder Jofre, 72-2-4 (50), 1960 and 1973.
Canada: Bantam and Featherweight champion George Dixon, 1890 and 1891.
Colombia: Antonio Cervantes, WBA Light Welterweight champion 67-12-1 (37), 1972.
Cuba: World Junior Lightweight champion Kid Chocolate, 136-10-6 (51), 1931.
Congo: WBC World Cruiserweight champion Anaclet Wamba, 46-2-1 (23), 1991.
Denmark: Lightweight champion Battling Nelson, 59-20-22 (40), 1905.
Dominican Republic: WBA Lightweight champion Carlos Teo Cruz, 42-13-2 (14), 1968.
England: Middle, Light Heavy, and Heavyweight champion Bob Fitzsimmons, 61-8-4 (57), 1891.
France: Featherweight champion Charles Ledoux, 104-23-6 (87), 1912.
Germany: Middleweight champion Frank Mantell, 36-23-24 (23), 1907.
Ghana: WBC Featherweight champion David Kotey, 49-8-3 (31), 1975.
Greece: NBA Light Heavyweight Anton Christoforidis, 53-15-8 (13), 1941. WBA Light Middleweight champion
Guadaloupe: Gilbert Dele, 34-3-1 (23), 1991.
Guyana: WBC Light Heavyweight champion Dennis Andries, 49-14-2 (30), 1986.
Hawaii: Flyweight champion Dado Marino, 57-15-3 (21), 1952.
Indonesia: IBF Super Flyweight champion Elly Pical, 20-5-1 (11), 1985.
Ireland: Middleweight champion “Nonpareil” Jack Dempsey, 50-3-11 (23), 1884.
Italy: Featherweight champion Frankie Conley, 34-17-11 (16), 1910.
Jamaica: WBA Light Middle, WBA Middle, and WBC Light Heavyweight champion Mike McCallum, 49-5-1 (36), 1984.
Japan: Flyweight champion Yoshio Shirai, 46-8-4 (18), 1952.
Korea: WBA-WBC Light Middleweight champion Ki Soo Kim, 33-2-2 (17), 1996.
Kyrgyzstan: WBA Lightweight champion Orzubek Nazarov, 26-1 (19), 1993.
Martinique: WBO Super Featherweight champion Daniel Londas, 58-9-1 (25), 1992.
Mauritania: WBA Cruiserweight champion Taoufik Belbouli, 29-1-1 (23), 1989.
Mexico: WBA Junior Welterweight champion Battling Shaw, 78-28-9 (32), 1933.
New Zealand: Featherweight champion Torpedo Billy Murphy 90-51-24 (76), 1890.
Nicaragua: WBA Feather, WBC Super Feather, and WBC Lightweight champion Alexis Arguello, 77-8 (62), 1974.
Nigeria: Featherweight champion Hogan Bassey, 68-13-4 (50), 1957.
Norway: Bantamweight champion Pete Sanstol, 96-6-8 (27), 1931.
Panama: NBA Bantamweight champion Panama Al Brown, 129-19-12 (29), 1929.
Philippines: Flyweight champion Pancho Villa, 77-4-4 (22), 1923.
Puerto Rico: Bantamweight champion Sixto Escobar, 39-23-4 (17), 1934.
Russia: Featherweight champion Louis Kid Kaplan, 107-22-13 (27), 1925.
Scotland: Flyweight champion Tancy Lee, 41-10-2 (28), 1915.
Senegal: Light Heavyweight champion Battling Siki, 60-24-4 (31), 1922.
South Africa: Bantamweight champion Willie Smith, 39-13-3 (3), 1927.
Spain: Bantamweight champion Baltazar Sangchilli, 78-20-12 (36), 1935.
Sweden: Heavyweight champion Ingemar Johansson, 26-2 (17), 1959.
Switzerland: Feather and Lightweight champion Frank Erne, 31-6-16 (15), 1899.
Thailand: Flyweight champion Pone Kingpetch, 28-7 (9), 1960.
Trinidad: WBA Lightweight champion Claude Noel, 31-10 (18), 1981.
Uganda: WBA Light Middleweight champion Ayub Kalule, 46-4 (23), 1979.
Venezuela: WBC-WBA Light Welterweight champion Carlos Hernandez, 60-12-4 (44), 1965.
Virgin Islands: Welter and Middleweight champion Emile Griffith, 85-24-2 (23), 1961.
Wales: Featherweight champion Jem Driscoll, 56-3-7 (37), 1912.
Yugoslavia: WBC Light Heavyweight champion Mate Parlov, 24-3-2 (12), 1978.
Zaire: WBA Middleweight champion Sumbu Kalambay, 57-6-1 (33), 1987.
