At his heaviest, Tonga's King Taufa'ahau Tupou IV weighed around 209.5 kg (462 lb), earning him a place in Guinness World Records as the heaviest monarch in modern history.
Record no. MRB-2026-006891
Guinness World Record for Heaviest Reigning Monarch
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.