1965 Campeonato Argentino de Rugby

The 1965 Campeonato Argentino de Rugby  was won by then selection of the Unión de Rugby de Rosario that beat in the final the selection of URBA (Buenos Aires)

After some years the tournament returned to a knock-out format.

National

 * The Buenos Aires Championship was won by C.U.B.A.
 * The Cordoba Province Championship was won by La Tablada
 * The North-East Championship was won by Uni Tucuman

International

 * It was the year of historical tour in South Africa and Rhodesia with the historical victory against Junior Springboks, of the Tests against Section Paloise and the Oxford e Cambridge selection tour.

Semifinals
Mar del Plata:M. Casanelli, G. Beverino, A. Omaña, E. Corbacho, R. Fruzcaldo, C. Alonso, H. Tiribelli, E. Ferrari (cap.), J. De la Garma, J. Cabarcos, C. Olivera, N. Cerviño, 0. Arroyo, C. Losada, J. Casanegra. Buenos Aires; L. Cazenave, M. Pascual, E. Poggi, A. Rodríguez Jurado, C. Cornille, M. Beccar Varela, L. Gradín, L. García Yáñez, H. Silva, E. Neri, G. Illía, B. Otaño (cap.), G. McCormick, N. González del Solar, R. Foster.

Rosario J. Seaton, E. España (capitán), J. Benzi, E. Ferraza, E. Quetglas, J. Caballero, O. Aletta de Sylva, J. Cortante, J. Imhoff, M Pavan, M. Bouza, M. Chesta, R. Esmendi, R. Seaton, J. Gómez Kenny Cordoba: E. Rodríguez, A. Quetglas, E. Meta, J. Ramírez, R. Faya, G. Piuma, J. Del Valle, R. Loyola, J. Masjoán, P. Demo, J. Taleb, J. Imas (capitán), G. Ribera, A. Paz, J. Coceo.

Final
Buenos Aires : B. Morgan, C. Cornille, A. Pagano, M. Pascual, R. Trotta, R. Cazenave, A. Etchegaray, E. Scharenberg, L. García Yáñez,  L. Gradín,  B. Otaño (capitán), A. Anthony, G. McCormick, N. González del Solar, R. Foster. Rosario: J. Seaton, E. España (capitán), J. Benzi, E. Ferraza, E. Quetglas, J. Scilabra, C. Cristie,  J. Imhoff, L. Robin, M. Paván, M. Chesta, M. Bouza, J. Gómez Kenny, R. Seaton. R. Esmendi.