Thinkhaya I of Toungoo (, ) was viceroy of Toungoo (Taungoo) from 1412 to 1415.

Brief Prior to the appointment at Toungoo by King Minkhaung I of Ava, Thinkhaya was governor of Sagu.Sein Lwin Lay 2006: 26 His title at Sagu was Thiri Zeya Kyawhtin, and he was already governor by 1408.Maha Yazawin Vol. 1 2006: 334Yazawin Thit Vol. 1 2012: 229Hmannan Vol. 1 2003: 476–477 Chronicles do not say when he was appointed to the Sagu post but the previous governor of Sagu, Theinkhathu II, was still alive in 1402.Maha Yazawin Vol. 1 2006: 311Hmannan Vol. 1 2003: 446–447

He died in 1415, and was succeeded by his son Thinkhaya II. He was married to Min Shwe Pan, a granddaughter of King Swa Saw Ke of Ava and great granddaughter of King Kyawswa I of Pinya.

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