1799) was the 15th Tuʻi Kanokupolu (chief of the House of Tupou in Oceanic kingdom of Tonga).
He was a grandson of Mailelaumotomoto, the 2nd Maʻafu-ʻo-Tukuʻiʻaulahi, the hereditary chief of the Vainī on Tongatapu, and a member of the Tongan reigning house of Tupou.
He was proclaimed somewhere in June 1799 by the Haʻa Havea clan, a junior branch of the Tuʻi Kanokupolu line.
It was many years before the chiefs agreed upon the successor: a distant cousin of his, Tupoumālohi, and then only to forestall ambitions of a candidate even less acceptable to them.
For sure it was not 21 April, the sometimes quoted date, the day that his predecessor was murdered, as contending chiefs erupted in fighting for at least one or two months after Tukuʻaho's dead.