| Spanish; Castilian: 10° Campeonato Sudamericano de Rugby | |
| Host: | Argentina |
| Champion: | Argentina |
| Runnerup: | Uruguay |
| Matches: | 10 |
| Countries: | |
| Preceded By: | 1975 |
| Succeeded By: | 1979 |
See main article: South American Rugby Championship.
The 1977 South American Rugby Championship was the tenth edition of the competition of the leading national Rugby Union teams in South America.
The tournament was played in Tucuman and won by Argentina.
| width=165 | Team | width=40 | Played | width=40 | Won | width=40 | Drawn | width=40 | Lost | width=40 | For | width=40 | Against | width=40 | Difference | width=40 | Pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 4 | 0 | 0 | 250 | 19 | + 231 | 8 | ||||||||||
| 4 | 3 | 0 | 1 | 84 | 110 | - 26 | 6 | ||||||||||
| 4 | 2 | 0 | 2 | 83 | 128 | + 7 | 4 | ||||||||||
| 4 | 1 | 0 | 3 | 38 | 128 | - 90 | 2 | ||||||||||
| 4 | 0 | 0 | 4 | 61 | 183 | - 122 | 0 |
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