Željko
Željko or Zeljko is a Slavic masculine given name. Notable people with the name include:
- Željko Čajkovski, Croatian football player and coach
- Željko Đokić, Serbian footballer
- Željko Šašić, Serbian pop-folk singer
- Željko Šturanović, former Prime Minister of Montenegro who served from 2006 to 2008
- Željko Adžić, former Croatian footballer
- Željko Bebek, popular Bosnian singer, lead vocalist of Bijelo dugme from 1974 to 1984
- Željko Blagojević, Bosnian Serb runner who ran over 900 km from Banja Luka, Bosnia to Kosovo as a protest
- Željko Božić, famous Serbian stuntman and actor
- Željko Bogut, Bosnian chess player and two time national champion
- Željko Brkić, Serbian football goalkeeper
- Željko Cicović, Serbian football goalkeeper
- Željko Đurđić, Serbian handball goalkeeper
- Željko Filipović, Slovenian footballer
- Željko Franulović, former Croatian tennis player
- Željko Ivanek, Emmy-award winning Slovenian American actor
- Željko Ivanković, Croatian writer from Bosnia and Herzegovina
- Željko Janjetović, Bosnian diplomat, Ambassador Extraordinary and Plenipotentiary of Bosnia and Herzegovina to the Russian Federation
- Željko Joksimović, popular Serbian singer, composer, songwriter and producer
- Željko Kalac, Australian goalkeeper currently playing for Greek club Kavala
- Željko Kalajdžić, Serbian professional football midfielder
- Željko Kerum, Croatian entrepreneur and politician
- Željko Komšić, Bosnian-Herzegovinian politician
- Željko Kopanja, Bosnian Serb newspaper editor and director of Nezavisne Novine
- Željko Kopić, Croatian football coach
- Željko Kovačević, Serbian footballer
- Željko Krajan, Croatian tennis coach and former professional tennis player
- Željko Kuzmić, Serbian professional football goalkeeper
- Željko Lelek, Bosnian Serb indicted for mass rape crimes in Višegrad during the Bosnian War
- Željko Ljubenović, Serbian football midfielder
- , Croatian cartoonist, animator and illustrator
- Željko Malnar, writer and TV presenter
- Željko Matuš, former Croatian footballer
- Željko Mavrović, retired male boxer from Croatia turned entrepreneur
- Željko Mijač, Croatian football manager and former player
- Željko Milinovič, former Slovenian footballer
- Željko Milošević, Serbian footballer
- Željko Mitrakovič, Slovenian football midfielder
- Željko Mrvaljević, Montenegrin football defenderer
- Željko Nimš, Croatian handball player
- Željko Obradović, professional basketball coach and former professional basketball player
- Željko Pahek, Croatian and Serbian comics creator and illustrator
- Željko Pavlović, Croatian football goalkeeper
- Željko Perušić, former Croatian footballer
- Željko Pervan, Croatian comedian
- Željko Petrović, retired footballer from Montenegro, technical coach of Feyenoord Rotterdam
- Željko Polak, retired Bosnian Serb football player
- Zeljko Ranogajec, professional gambler from Australia
- Željko Ražnatović, better known as Arkan, Serbian career criminal and later a paramilitary leader
- Željko Rebrača, retired Serbian professional basketball player
- Željko Rohatinski, current Governor of the Croatian National Bank
- Željko Samardžić, Bosnian Serb pop-folk singer
- Željko Senečić, Croatian film and television production designer, film director and screenwriter
- Željko Sošić, young Montenegrin director
- Željko Sopić, Croatian football midfielder
- Željko Stinčić, former Croatian footballer
- Željko Tadić, former Montenegrin footballer
- Željko Tanasković, Serbian volleyball player
- Željko Turk, the current mayor of Zaprešić, a town in Zagreb County, Croatia
- Željko Vincek, Croatian sprinter who specializes in the 400 metres
- Željko Vuković, Croatian-born Austrian footballer
- Željko Vuković, Montenegrin footballer
- Željko Zagorac, professional basketball player
- Zeljko Babic, former association football player in the now defunct National Soccer League in Australia
- Zeljko Bilecki, retired Canadian soccer player
- Zeljko Gavrilović, veteran Serbian footballer
- Zeljko Loparić, Croatian philosopher, historian of the philosophy and university teacher
- Zeljko Marasovich, Croatian American composer of classical and film music
- Zeljko Radovic , Austrian football player
