Stefan Drzewiecki (Polish: [ˈstɛfan d͡ʐɛˈvjɛt͡skʲi]; Russian: Джеве́цкий Степа́н Ка́рлович (Казими́рович); Ukrainian: Джеве́цький Степа́н Ка́рлович (Казими́рович); 26 July 1844, Kunka (ru), Podolia, Russian Empire (today Kunka (uk), Ukraine) – 23 April 1938, Paris) was a Polish scientist, journalist, engineer, constructor and inventor, known for designing and constructing the world's first electric-powered submarine.

[6] After the Vienna World's Fair in 1873, he travelled to St. Petersburg at the invitation of Grand Duke Konstantin, where he pursued a fruitful career as a mechanical engineer.

His inventions from that period include an instrument which automatically drew on a map the route traveled by the ship at sea.

[3][9] His work Theorie générale de l'hélice (1920), was honored by the French Academy of Science as fundamental in the development of modern propellers.

[10] Streets named in honour of Drzewiecki are located in a number of Polish cities including Warsaw, Wrocław, Gdańsk, Poznań, Biała Podlaska, Mielec and Szczecin.

[11] In 1991, a monument commemorating Drzewiecki was unveiled in the Ukrainian port city of Odesa where the inventor stayed for a period of time and tested his submarine in 1878.

Known and Unknown) published by the Department of Cooperation with the Polish Diaspora and Poles Abroad of the Ministry of Foreign Affairs.