Ewa Siemaszko – Polish engineer, publicist and writer, collector of oral accounts and historical data regarding the Massacres of Poles in Volhynia. Siemaszko graduated with a Master's degree in technological studies from the Warsaw University of Life Sciences. She has a strong interest in Polish history.
From 1990 Ewa Siemaszko collected and prepared documents regarding the ethnic cleansing that took place in Volhynia during the Second World War. She is a co-author of an 1992 exhibition at the Warsaw Museum of Independence regarding the actions of the NKVD in and around the Polish Kresy region in 1941; and, an exhibit "Wolyn or our ancestors" organised in 2002 at the Dom Polonii in Warsaw.
She collaborated with the Society of Volyn and Polissia at the Polish Institute of National Remembrance.
For her contributions to the monograph Ludobójstwo dokonane przez nacjonalistów ukraińskich na ludności polskiej Wołynia 1939-1945 (Genocide committed by Ukrainian Nationalists in Volhynia 1939-1945)[1] written together with her father Władysław, she received the Józef Mackiewicz award in 2002.[2]