| Spanish; Castilian: 21° Campeonato Sudamericano de Rugby | |
| Champion: | Argentina |
| Runnerup: | Uruguay |
| Matches: | 6 |
| Countries: | |
| Preceded By: | 1997 |
| Succeeded By: | 2000 "A" |
See main article: South American Rugby Championship.
The 1998 South American Rugby Championship was the 21st edition of the competition of the leading national Rugby Union teams in South America.
The tournament was not played in a host country, but in different venues in each countrie participating.
Argentina (that played with the "development XV") won the tournament.
| 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 | 114 | 31 | + 83 | 6 | ||||||||||
| 3 | 2 | 0 | 1 | 127 | 46 | + 81 | 4 | ||||||||||
| 3 | 1 | 0 | 2 | 88 | 62 | + 26 | 2 | ||||||||||
| 3 | 0 | 0 | 3 | 20 | 210 | - 190 | 0 |
List of matches played:*Web site: MEMORIA Temporada año 1998 . . December 1998 . Spanish . .pdf . 2013-06-07 . https://web.archive.org/web/20121101075158/http://uar.com.ar/pdf/memorias/1998.pdf . 2012-11-01 . dead. ------------------------