Bolesław Wieniawa-Długoszowski
Photograph by Narcyz Witczak-Witaczyński  | |
| Successor as President of Poland | |
| In office 25 September 1939 – 26 September 1939  | |
| Personal details | |
| Born | 22 July 1881 Maksymówka, Kingdom of Galicia and Lodomeria, Austria-Hungary  | 
| Died | 1 July 1942 (aged 61) New York City, New York, United States of America  | 
| Nationality | Polish | 
| Spouse(s) | Stephania Calvas, Bronisława Wieniawa-Długoszowska | 
| Children | Susanna Vernon | 
| Alma mater | Higher War School | 
Bolesław Ignacy Florian Wieniawa-Długoszowski (22 July 1881 – 1 July 1942) was a Polish general, adjutant to Chief of State Józef Piłsudski, politician, freemason, diplomat, poet, artist and formally for one day the President of the Republic of Poland.
He was one of the generation that fought for and saw the rebirth of an independent Poland on 11 November 1918 (National Independence Day), only to see that independence lost again after the 1939 division of Poland between Nazi Germany and the Soviet Union pursuant to the Molotov–Ribbentrop Pact.