Władysław Siemaszko

Władysław Siemaszko
Siemaszko in the 1930s
Born(1919-06-08)8 June 1919
Curitiba, Paraná, Brazil
Died11 December 2025(2025-12-11) (aged 106)
OccupationLawyer
ChildrenEwa Siemaszko

Władysław Siemaszko (8 June 1919 – 11 December 2025) was a Polish publicist and lawyer, a member of the Polish resistance Armia Krajowa (AK), and author of numerous publications focusing on the massacres of Poles in Volhynia. He was the father of writer Ewa Siemaszko, co-author of Ludobójstwo dokonane przez nacjonalistów ukraińskich na ludności polskiej Wołynia 1939–45 (The Genocide Committed by the Ukrainian Nationalists on Polish Citizens of Volhynia in 1939–45) consisting of two volumes of 1,500 pages of research.