| Competition: | Cook Islands Round Cup |
| Season: | 1973 |
| Winners: | Titikaveka |
| Prevseason: | 1972 |
| Nextseason: | 1974 |
The 1973 season of the Cook Islands Round Cup was the fourth recorded season of top flight association football competition in the Cook Islands, with any results between 1951 and 1969 currently unknown.[1] Titikaveka won the championship, their fourth recorded championship in a row.