1977–78 Tongan A Grade

The 1977-78 season of the Tongan A Grade was the sixth recorded season of top flight association football competition in Tonga. Veitongo FC won the championship, their first title. The season began on the December 17, 1977.

Teams

 * Funga'onetaka
 * Kolofoʻou
 * Ma'ufanga
 * Ngeleʻia FC
 * Toafaka'amu
 * Veitongo I
 * Veitongo II