| 1943 South American Championships in Athletics | |
| Host City: | Santiago, Chile |
| Dates: | 23 April–2 May |
| Previous: | Buenos Aires 1941 |
| Next: | Montevideo 1945 |
The 1943 South American Championships in Athletics were held in Santiago, Chile, between 23 April and 2 May.
| 100 metres | Adelio Márquez | 10.8 | Walter Pérez | 10.9 | Roberto Valenzuela | 11.0 | |
| 200 metres | Roberto Valenzuela | 22.2 | Adelio Márquez | 22.2 | Victorino Triulzi | 22.3 | |
| 400 metres | Jorge Ehlers | 48.6 | Víctorino Triulzi | 49.2 | Enrique Hurtado | 49.8 | |
| 800 metres | Alfonso Rozas | 1:54.6 | Guillermo García | 1:55.4 | Marino Cid | 1:55.5 | |
| 1500 metres | Guillermo García | 4:03.2 | Melchor Palmeiro | 4:03.5 | Marino Cid | 4:05.4 | |
| 3000 metres | Raúl Inostroza | 8:32.4 CR | Miguel Castro | 8:35.0 | Delfo Cabrera | 8:44.6 | |
| 5000 metres | Raúl Inostroza | 15:00.0 | Miguel Castro | 15:09.9 | Delfo Cabrera | 15:11.0 | |
| 10,000 metres | René Millas | 31:27.4 | Manuel Díaz | 31:34.0 | Delfo Cabrera | 31:36.8 | |
| Road race | Corsino Fernández | 1:45:45 | Eusebio Guiñez | 1:45:53 | Julio Montecinos | 1:49:03 | |
| 110 metres hurdles | Julio Jaime | 15.7 | Jorge Undurraga | 15.8 | Juan Colín | 15.8 | |
| 400 metres hurdles | Alfonso Rozas | 55.1 | Juan Hoelzel | 55.6 | Octavio Montero | 57.1 | |
| 4 × 100 metres relay | Oscar Rebecchi Fernández Adelio Marquez Leopoldo Monastirsky | 42.4 | Nelson Pereira Juan Hoelzel Alejandro González Roberto Valenzuela | 42.4 | Julio Jaime Ruben Gonda Miglierina José Cuneo | 43.2 | |
| 4 × 400 metres relay | Alberto Propato Adelio Marquez Leopoldo Monastirsky Victorino Triulzi | 3:18.8 CR | Enrique Hurtado Roberto Yokota Jorge Ehlers Alfonso Rozas | 3:19.4 | Heredia Ayabiri Domínguez Colodro | 3:41.1 | |
| 3000 metres team race | | 10 | | 6 | 4 | ||
| Cross country | Raúl Inostroza | 46:08.0 | Eusebio Guiñez | 46:14.0 | René Millas | 46:30.4 | |
| High jump | Antonio Barrionuevo | 1.83 | Carlos Capella | 1.80 | Alfonso Burgos | 1.75 | |
| Pole vault | Federico Horn | 4.00 =CR | Erwin Reimer | 3.80 | Carlos Baumann | 3.60 | |
| Long jump | Alberto Eggeling | 7.02 | Juan Hoelzel | 6.85 | Guillermo Dyer | 6.80 | |
| Triple jump | Guillermo Dyer | 14.43 | Oscar Bringas | 14.41 | Celestino Sarraua | 14.15 | |
| Shot put | Julián Llorente | 14.33 | Raúl Rebagliatti | 13.50 | Guillermo Otto | 12.75 | |
| Discus throw | Manuel Consiglieri | 44.43 | Eduardo Julve | 41.64 | Alfredo Meynet | 39.53 | |
| Hammer throw | Manuel Etchepare | 46.81 | Juan Fusé | 46.06 | Antonio Barticevic | 44.82 | |
| Javelin throw | Otto Wenzel | 57.08 | Raúl Cóccaro | 55.52 | Rodolfo Correa | 53.99 | |
| Decathlon | Juan Colín | 6069 | Eduardo Julve | 6046 | Roberto Stahringer | 5912 |
| 100 metres | Noemí Simonetto | 12.4 CR | Beatriz Kretschmer | 12.6 | Ilse Hammerl | 12.8 | |
| 200 metres | Ilse Hammerl | 26.5 | Beatriz Kretschmer | 26.7 | María Malvicini | 27.0 | |
| 80 metres hurdles | Edith Klempau | 12.0 CR | Susana Krumenaker | 12.1 | Ilse Barends | 12.2 | |
| 4 × 100 metres relay | Ilse Hammerl Noemi Simonetto Elsa Irigoyen María Malvicini | 49.5 =CR | Ilse Barends Betty Morales Edith Klempau Betty Kretschmer | 50.8 | Julia Iriarte Luz Azcarraga Carmela Rosa Soto Gisela Brumm | 53.3 | |
| High jump | Ilse Barends | 1.50 | Edith Klempau | 1.50 | Noemí Simonetto | 1.50 | |
| Long jump | Noemí Simonetto | 5.27 CR | Ilse Barends | 5.25 | Lily Warch | 4.93 | |
| Shot put | Edith Klempau | 11.70 | Ingeborg Mello | 10.98 | Lore Zippelius | 10.79 | |
| Discus throw | Lore Zippelius | 37.16 CR | Ingeborg Mello | 34.60 | Christel Balde | 34.53 | |
| Javelin throw | Edith Klempau | 34.19 | Ilse Caro | 34.17 | Mercedes Martín | 33.02 |