Kuczyński, Kuczynski, Kuchinsky, Kuchinski or Kuchinskiy is a Slavic male surname, which is often used both for males and females in other countries. Its Slavic feminine counterpart is Kuczyńska in Polish, or Kuchinskaya or Kuchinskaia in Russian. It may refer to:
Alex Kuczynski (born 1967), reporter, columnist, author
Bert Kuczynski (1920–1997), pitcher and American football tight end
Chris Korwin-Kuczynski (born 1953), Canadian politician
Elena Kuchinskaya (born 1984), Russian racing cyclist
John Kuczynski (born 1973), American professional darts player
Julius Kuczynski (1914–2000) AKA Pee Wee King, American country music singer/songwriter
Jürgen Kuczynski (1904–1997), German internationally influential economist, spouse of Marguerite
Kamil Kuczyński (born 1985), Polish cyclist
Marguerite Kuczynski (1904–1998), Economist, social scientist, spouse of Jürgen
Maxime Hans Kuczynski (1890–1967), German-Peruvian physician
Mikhail Kuchinsky (1911–1995), Soviet Air Force lieutenant colonel and Hero of the Soviet Union
Natalia Kuchinskaya (born 1949), Russian artistic gymnast
Pavel Kuczynski (1846–1897), Polish composer
Pedro Pablo Kuczynski (born 1938), Peruvian public administrator, economist and politician
Robert René Kuczynski (1876–1947), German-based Jewish economist and demographer
Valeriy P. Kuchinsky (born 1944), Ukrainian diplomat and politician
Ursula Kuczynski (1907–2000), German author and spy for the Soviet Union