Gleb Maximilianovich Krzhizhanovsky (Russian: Глеб Максимилиа́нович Кржижано́вский) (24 January 1872 – 31 March 1959) was a Soviet Scientist and a state figure. Born to a family of Polish descent (Polish surname: Krzyżanowski) he became an Academician of USSR Academy of Sciences (1929) and a Hero of Socialist Labour (1957).
Krzhizhanovsky was born in Samara in 1872. In 1889 he moved to St Petersburg, where he attended the Saint Petersburg State Institute of Technology, becoming involved in Marxist circles in 1891. He was a close friend and colleague of Lenin and, in 1895, was one of the co-founders, with Lenin, of the St. Petersburg League of Struggle for the Emancipation of the Working Class. His activities with this group led to his imprisonment in Butyrka prison, where he wrote the Russian text of the Polish revolutionary song Warszawianka.
In 1904-5 he was involved in organising the 3rd Congress of the Russian Social Democratic Labor Party.
In 1910 he oversaw the construction of a power station near Moscow and proposed the idea of a hydroelectric plant in Saratov.