Nyaungyan Min (Burmese: ညောင်ရမ်းမင်း [ɲàʊɴjáɴ mɪ́ɴ]; 8 November 1555 – 5 November [O.S. 26 October] 1605) was king of the Toungoo Dynasty of Burma (Myanmar) from 1599 to 1605. He is also referred to as the founder of the Restored Toungoo Dynasty or Nyaungyan Dynasty for starting the reunification process following the collapse of the Toungoo Empire.

A son of King Bayinnaung by a minor queen, Nyaungyan gradually emerged as a power in Upper Burma in the mid-1590s. When major vassal rulers renounced their ties with King Nanda in 1597, he too broke away by seizing Ava (Inwa). But he stayed out of myriad wars in the low country. Instead, he methodically consolidated his base in the upcountry, and went on to acquire the surrounding cis-Salween Shan states until his death in 1605. He also rebuilt the economy of Upper Burma, and (re-)established several social, financial and military standards, many of which would be retained to the end of the Toungoo Dynasty in 1752. His efforts paved the way for his eldest son and successor Anaukpetlun to restore major portions of the Toungoo Empire in the next two decades.

He was born Shin Thissa (ရှင်သစ္စာ , [ʃɪ̀ɴ θɪʔsà]) to Lady Khin Pyezon and King Bayinnaung on 8 November 1555. He had an elder brother, Shin Ubote. He was one of the 91 children born to minor queens, who were ranked below the six children by the three senior queens. Indeed, Thissa had to wait until he was 25 to get a governorship. On 8 February 1581, the king appointed Thissa to succeed Ubote, who died in January 1581, as governor of Nyaungyan, a small town in present-day Meiktila District, south of Ava (Inwa). The small town governor was married to his half sister Khin Hpone Myint, who like him was a child of a junior queen. (Khin Hpone Myint's name is sometimes reported as "Khin Hpone Myat".)The couple had been married since 25 February 1577, and had a 3-year-old child, one Thakin Lat.

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