| 20 °Campeonato Argentino | |
|---|---|
| Countries |  Argentina |
| Number of teams | 10 |
| Champions | Buenos Aires (3rd title) |
The Campeonato Argentino de Rugby 1964 was won by the selection of Buenos Aires that beat in the final the selection of Rosario
That year in Argentina rugby union
National
- The Buenos Aires Championship was won by C.A.S.I.
- The Cordoba Province Championship was won by Universitario Cordoba
- The North-East Championship was won by Cardenales
- The Buenos Aires Cricket and Rugby Club, the oldest Argentine club arrive to their 100 years
International
- In the 1964 Argentine national team won the South American Championship, played in São Paulo-
- Was announced the 1965 Argentina rugby union tour of Rhodesia and South Africa, with the begin of training at the end of 1964, for the first experience of Argentine rugby outside of South America.
Preliminary
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Semifinals
| 4 October 1964 |
| Sur | 6-22 | Rosario |
| Try: Vila Con: Seaton 2 Pen: Torres | Try: Benzi, Avalos 2, España, Aletta 2 |
| Base Naval, Puerto Belgrano Referee: Ricardo Colombo (Buenos Aires) |
Sur: A. Torres, A. Vila, J. Angelo, O. Fasano, E. Diez, H. De Caso, R. Urriza (cap.), J. Suárez, J. De la Cruz, R. Sánchez, R. Smith, .1. Tuminello, F. Pacho, N. Boselli, J. Dover
Rosario: J. Seaton, E. España, E. Ferraza, J. Benzi, R. Avalos, J. Scialabra, O. Aletta, J. Imhoff, A. Rinaldi, M. Paván (cap.), A. Colla, M. Bouza, H. Ferraro, J. Benvenuto, R. Esmendi.
| 4 October 1964 |
| Cuyo | 3-38 | Buenos Aires |
| Try: Brandi | Try: Poggi 2, Goti 2, Silva 3, Neri. Foster Con: Queirolo 4 Pen: Queirolo |
| Mendoza Referee: Eduardo Niño (Buenos Aires) |
Cuyo: J. Muñoz, O. Villanueva, Ay Meli, J. Walker, E. Casale, E. Valejos, E. Naveyra, L. Chaluleu (cap.), J. Aldao, M. Brandi, L. Novillo, J. Nasazzi, O. Luján Williams, F. Segovia, R. Farielo.
Buenos Aires: M. Dumas, H. Goti, J. O. Queirolo, M. Molina Berro, E. Neri, J. H. Dartiguelonge, A. Etchegaray, R. Foster, H. Silva, M. Puigdevall, A. Otaño, R. L. M. García Yañez, N. González del Solar, G. Mc Cormick, A. Silveira.
Final
| 10 October 1964 |
| Rosario | 12-16 | Buenos Aires |
| Try: España Pen: Seaton 3 | Try: Etchegaray, Neri Con: Molina 2 Pen: Molina 2 |
| Plaza Jewell, Rosario Referee: César De Elizalde (Buenos Aires) |
Rosario: J. Seaton, E. España, J. Benzi, E. Ferraza, R. Abalos, A. Fasce, O. Aletta, M. Paván (cap.), A. Rinaldi, José Imhoff, A. Colla, H. Ferraro, R. Esmendi, J. Benvenuto, A. Paván.
Buenos Aires: M. Dumas, H. Goti, J. C. Queirolo, M. Molina, E. Neri, M. Beccar Varela, A. Etchegaray, H. Silva, R. Foster, G. Montes de Oca, L. Varela, B. Otaño (cap.), G. McCormick, N. González del Solar, I. García Yáñez.