Włodzimierz Bonawentura Krzyżanowski ([vwɔˈd͡ʑimjɛʂ kʂɨʐaˈnɔfski]; 8 July 1824 – 31 January 1887) was a Polish American engineer, politician, and brigadier general in the Union Army. A Polish noble, he took part in the 1848 uprising against Prussia and left Poland after its suppression. During the American Civil War he enlisted in the United States' Union Army, recruited a company of Polish immigrants, and became colonel of the 58th New York Volunteer Infantry Regiment, listed in the official Army Register as the "Polish Legion".