| Competition: | Tongan A Grade |
| Season: | 1983 |
| Winners: | Ngele'ia FC |
| Prevseason: | 1982 |
| Nextseason: | 1984 |
The 1983 season of the Tongan A Grade was the 10th season of top flight association football competition in Tonga. Ngeleʻia FC won the championship for the second time, their second title in a then-record of 7 consecutive championships.[1]