Mohnyin Thado (Burmese: ??????????????, pronounced [mó???´? ð?dó]; Mohnyin Mintaya; 1379 – 1439) was king of Ava from 1426 to 1439.
The ethnic Burman saopha (chief) of Mohnyin came to power after overthrowing King Kale Kye-Taung Nyo and his queen Shin Bo-Me in 1426.
His reign marks the plateauing of Ava's power.
Left exhausted by the Forty Years' War with Hanthawaddy Pegu (Bago) in the south, and long-running wars against various Shan States in the north, Ava was no longer in a position to expand.
Mohnyin Thado spent his 12-year reign keeping restive regions of Ava in one piece.
He never controlled Toungoo.
He had to tolerate the governors of other regions who treated him as at best a senior.
Hanthwaddy aided the Toungoo rebellion in 1426 and seized the region in 1436.
But the two kingdoms did not resume a full-scale war.
In 1438, Mohnyin Thado renumbered the Burmese calendar by subtracting two years on the advice of a court astrologer.
The change did not stick as he died a year later.
King Alaungpaya of Konbaung Dynasty claimed descent from Mohnyin Thado.