Wacław Kajetan Sieroszewski was a Polish writer, Polish Socialist Party activist, and soldier in the World War I-era Polish Legions. For activities subversive of the Russian Empire, he had spent many years in Siberian exile.
- Occupation
- writer, politician, traveler, independence activist
- Position held
- Member of the Senate of the Republic of Poland, member of the Sejm of the Second Polish Republic
- Citizenship
- Poland, Russia
- Born
- August 24, 1858, August 21, 1858
- Died
- April 20, 1945