Min Yaza of Wun Zin (Burmese: ဝန်စင်း မင်းရာဇာ, pronounced [wùɴ zɪ́ɴ mɪ́ɴ jàzà]; also known as Po Yaza (ဘိုးရာဇာ, [pʰó jàzà]); 1347/48−1421) was chief minister of Ava from 1379/80 to 1421. He was the main adviser to three successive kings of Ava: Swa Saw Ke, Tarabya and Minkhaung I. Under his guidance, Ava made several attempts to restore the Pagan Empire, and methodically acquired its immediate surrounding Shan states between 1371 and 1406. By his death in 1421, he had advised his kings almost for the entire duration of the Forty Years' War (1385–1424) between Ava and Pegu.