Ba Win (Burmese: ဘဝင်း, pronounced: [ba̰ wɪ́ɴ]; 10 June 1901 – 19 July 1947) was a Burmese politician, and Minister of Trade in the Interim Government of Burma. He was the eldest brother of Aung San, and was assassinated together with his youngest brother during an Executive Council meeting on 19 July 1947. July 19 is commemorated each year as the Martyrs' Day in Myanmar.