Supatphaa, also Gadadhar Singha, was the twenty-ninth king of Ahom kingdom. He established the rule of Tungkhungia royal house of Ahom kings, whose descendants continued to rule till the climactic end of the Ahom kingdom in 1826. He was a son of Gobar raja, a descendant of Suhungmung, and who had become king for twenty days. Gadadhar Singha stabilized the Ahom kingdom, which was going through a long decade of political turmoil and instability. This period saw the ruthless power grab of Debera Borbarua and Laluksola Borphukan's abandonment of Guwahati to the hands of Mughals and oppression via Sulikphaa alias Lora Roja.
- Position held
- King of Ahom
- Died
- 1696
