| Spanish; Castilian: 12° Campeonato Sudamericano de Rugby | |
| Host: | Uruguay |
| Champion: | Uruguay |
| Runnerup: | Chile |
| Matches: | 6 |
| Countries: | |
| Preceded By: | 1979 |
| Succeeded By: | 1983 |
| Date: | 16–20 May 1981 |
See main article: South American Rugby Championship.
The 1981 South American Rugby Championship was the twelfth edition of the competition of the leading national Rugby Union teams in South America.
The tournament was played in Montevideo and won by Uruguay. Argentina didn't participate.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 3 | 0 | 0 | 164 | 17 | + 147 | 6 | ||||||||||
| 3 | 2 | 0 | 1 | 69 | 39 | + 30 | 4 | ||||||||||
| 3 | 1 | 0 | 2 | 52 | 90 | - 38 | 2 | ||||||||||
| 3 | 0 | 0 | 3 | 6 | 145 | - 139 | 0 |
--------
--------
--------