See main article: Campeonato Argentino.
| Spanish; Castilian: 6° Campeonato Argentino | |
| Countries: |  Argentina |
| Runnersup: | Capital |
| Champions: | Provincia |
| Count: | 5 |
| Prevseason: | 1949 |
| Nextseason: | 1951 |
The 1950 Campeonato Argentino de Rugby was won by the selection of Buenos Aires Province ("Provincia") that beat the selection of Capital in the final.
This edition saw the first presence of the selections of La Plata and Río Paranà, formed by team of Santa Fe Province (Rosario excluded) and Entre Ríos. Before this club were part of the Unión de Rugby del Litoral Argentino. Starting from this time, it will be formed only by the club from Rosario.
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Provincia: R. Frigerio (Pucará), C. Arana (CASI), A. Jones (Old G's), A. Palma (Pucará), E. Caffarone (Olivos), R. Giles (Pucará), G. Ehrman (Pucará), L. Allen (CASI), M. Sarandón (cap.) (SIC), D. Haxell (Old G's), E. Domínguez (Pucará), J. Neira (Curupaytí), N. Tompkins (Old G's), C. Swain (Old G's), R. Follet (Old G's).
Capital: J. Genoud (C.U.B.A.), U. O'Farrel (C.U.B.A.), D. Wesley Smith (Bs. As.), J. Comotto (Hindú), D. Farrell (Hindú), R. Quian (C.U.B.A.), P. Felisari (Belgrano), A. Dillon (Belgrano), E. Holmberg (C.U.B.A.), J. O'Farrell (C.U.B.A.), A. Phillips(cap.) (Belgrano), C. Morea (C.U.B.A.), A. Bori (Belgrano), H. Achaval (C.U.B.A.), R. Pont Lezica (C.U.B.A.).