| Competition: | Tongatapu Inter Club Championship |
| Season: | 1989 |
| Winners: | Navutoka FC |
| Prevseason: | 1988 |
| Nextseason: | 1990 |
The 1989 season of the Tongatapu Inter Club Championship was the 16th season of top flight association football competition in Tonga. Navutoka FC won the championship for the first time.[1]