Kaczynski or Kaczyński (; feminine: Kaczyńska, plural: Kaczyńscy) is a Polish-language surname. Its Lithuanian equivalent is Kačinskas.

Language Masculine Feminine Polish Kaczyński Kaczyńska Lithuanian Kačinskas Kačinskienė (married) Kačinskaitė (unmarried) Russian (Romanization) (Kachinskiy, Kachinsky) (Kachinskaya)

People Aleksandra Kaczyńska (born 1954), Polish rower Andrew Kaczynski (born 1989), American journalist and political reporter for CNN Bogusław Kaczyński (born 1942–2016), Polish classical music journalist David Kaczynski (born 1949), American activist, Theodore Kaczynski's brother Elliot Kaczynski (born 2010), Swedish racing driver Filip Kaczyński (born 1987), Polish politician Jarosław Kaczyński (born 1949), Polish politician, former prime minister of Poland Lech Kaczyński (1949–2010), Polish politician, former president of Poland, Jarosław Kaczyński's twin brother Maria Kaczyńska (1942–2010), Polish economist, Lech Kaczyński's wife Richard Kaczynski (born 1963), American writer Ryszard Kaczyński (born 1954), Polish politician Sophie Kaczynski, character from 2 Broke Girls, played by Jennifer Coolidge Stanislaus Katczinsky, All Quiet on the Western Front character Ted Kaczynski (1942–2023), American mathematician, social critic, and serial terrorist mail-bomber known as the Unabomber Thomas Kaczynski Jr. (born 1955), American politician

See also

Kaczynski towers, Espace Léopold, Brussels, Belgium Kuczynski Kuczyńskie Kucinski Kulczyński