Placek may be either a Polish language surname or a rendering of the Czech-language surname Plaček without diacritics.
Surnames Placek or Plaček (Czech feminine: Plačková) may refer to:
Abraham Plaček (1799–1884), Moravian rabbi Adam Placek, founder and CEO of Polish company Oknoplast Alan Placek, American soccer player Baruch Jakob Plaček (1834–1922), Moravian rabbi and writer Jan Plaček ( 1894 – 1957), Czechoslovak footballer
, Czech comic actress and musician, member of Ivan Mládek's Banjo Band Vladimír Plaček (1965–2018), Czech politician and physician Wes Placek, founder of Artists Space Gallery, Melbourne, Australia
See also
Placek, a character from The Two Who Stole the Moon Placzek