The Tonga national rugby league team represents Tonga in rugby league football. They are currently the fifth ranked team in the world. The team was formed to compete in the 1986 Pacific Cup, and have competed at six Rugby League World Cups, starting in 1995 and continuing consecutively until the most recent tournament. Their best result was at the 2017 Rugby League World Cup, where they were semi-finalists.

Rugby league football, commonly known as rugby league in English-speaking countries and rugby XIII in non-Anglophone Europe and South America, and referred to colloquially as rugby, football, footy or league in its heartlands, is a full-contact sport played by two teams of thirteen players on a rectangular field measuring 68 m (74 yd) wide and 112–122 m (122–133 yd) long with H-shaped posts at both ends. It is one of the two major codes of rugby football, the other being rugby union. It originated in 1895 in Huddersfield, Yorkshire, England, as the result of a split from the Rugby Football Union (RFU) over the issue of payments to players. The rules of the game governed by the new Northern Rugby Football Union progressively changed from those of the RFU with the specific aim of producing a faster and more entertaining game to appeal to spectators, on whose income the new organisation and its members depended.