The Plast National Scout Organization of Ukraine (Ukrainian: Пласт Національна Скаутська Організація України, Plast Natsionalna Skautska Orhanizatsiia Ukrayiny), commonly called Ukrainian Plast or simply Plast, is the largest Scouting organization in Ukraine.
Plast was founded in Lviv, Austro-Hungarian Galicia in 1911 as the Ukrainian Scout Organization. Ukrainian Scouting has been known since its inception as "Plast". In Ukrainian a plastun is an historical name for a Cossack scout and sentry serviceman. The founder of Ukrainian Scouting, Dr. Oleksander Tysovsky (alternately Oleksandr Tysowskyj), affectionately known as "Drot," adapted the universal Scout principles to the needs and interests of Ukrainian youth.
Born during great social and political upheavals in Europe, Ukrainian Plast came into being to fulfill specific national aims, unlike other Scout organizations. The first Scout troops were formed in L'viv in 1911, then a part of the Austro-Hungarian Empire, by Petro Franko and Ivan Chmola. Plast is generally deemed to have been officially founded by Dr. Oleksander Tysovsky on 12 April 1912, at the L'viv Academic Gymnasium.