| Competition: | Tongatapu Inter Club Championship |
| Season: | 1990 |
| Winners: | Ngele'ia FC |
| Prevseason: | 1989 |
| Nextseason: | 1991 |
The 1990 season of the Tongatapu Inter Club Championship was the 17th season of top flight association football competition in Tonga. Ngeleʻia FC won the championship for the eighth time.[1]