Željko or Zeljko (Cyrillic script: Жељко) is a Slavic masculine given name. Notable people with the name include:
Željko Čajkovski (born 1925), Croatian football (soccer) player and coachŽeljko Đokić (born 1982), Serbian footballerŽeljko Šašić (born 1969), Serbian pop-folk singerŽeljko Šturanović (born 1960), former Prime Minister of Montenegro who served from 2006 to 2008Željko Adžić (born 1965), former Croatian footballerŽeljko Bebek (born 1945), popular Bosnian singer, lead vocalist of Bijelo dugme from 1974 to 1984Željko Blagojević, Bosnian Serb runner who ran over 900 km from Banja Luka, Bosnia to Kosovo as a protestŽeljko Božić (born 1974), famous Serbian stuntman and actorŽeljko Bogut (born 1969), Bosnian chess player and two time national championŽeljko Brkić (born 1986), Serbian football goalkeeperŽeljko Cicović (born 1971), Serbian football goalkeeperŽeljko Đurđić (born 1961), Serbian handball goalkeeperŽeljko Filipović (born 1988), Slovenian footballerŽeljko Franulović (born 1947), former Croatian tennis playerŽeljko Ivanek (born 1957), Emmy-award winning Slovenian American actorŽeljko Ivanković (born 1954), Croatian writer from Bosnia and HerzegovinaŽeljko Janjetović, Bosnian diplomat, Ambassador Extraordinary and Plenipotentiary of Bosnia and Herzegovina to the Russian FederationŽeljko Joksimović (born 1972), popular Serbian singer, songwriter and producerŽeljko Kalac (born 1972), Australian goalkeeper currently playing for Greek club KavalaŽeljko Kalajdžić (born 1978), Serbian professional football midfielderŽeljko Kerum (born 1960), Croatian entrepreneur and politicianŽeljko Komšić (born 1964), Bosnian-Herzegovinian politicianŽeljko Kopanja (born 1954), Bosnian Serb newspaper editor and director of Nezavisne NovineŽeljko Kovačević (born 1981), Serbian footballerŽeljko Krajan (born 1979), Croatian tennis coach and former professional tennis playerŽeljko Kuzmić (born 1984), Serbian professional football goalkeeperŽeljko Lelek (born 1962), Bosnian Serb indicted for mass rape crimes in Višegrad during the Bosnian WarŽeljko Ljubenović (born 1981), Serbian football midfielderŽeljko Lordanić (born 1948), Croatian cartoonist, animator and illustratorŽeljko Malnar (1944–2013), writer and TV presenterŽeljko Matuš (born 1935), former Croatian footballerŽeljko Mavrović (born 1969), retired male boxer from Croatia turned entrepreneurŽeljko Mijač (born 1954), Croatian football manager and former playerŽeljko Milinovič (born 1969), former Slovenian footballerŽeljko Milošević (born 1976), Serbian footballerŽeljko Mitrakovič (born 1972), Slovenian football midfielderŽeljko Mrvaljević (born 1981), Montenegrin football defendererŽeljko Nimš (born 1950), Croatian handball playerŽeljko Obradović (born 1960), professional basketball coach and former professional basketball playerŽeljko Pahek (born 1954), Croatian and Serbian comics creator and illustratorŽeljko Pavlović (born 1971), Croatian football goalkeeperŽeljko Perušić (born 1936), former Croatian footballerŽeljko Pervan (born 1962), Croatian comedianŽeljko Petrović (born 1965), retired footballer from Montenegro, technical coach of Feyenoord RotterdamŽeljko Polak (born 1976), retired Bosnian Serb football playerZeljko Ranogajec, professional gambler from AustraliaŽeljko Ražnatović (1952–2000), Serbian career criminal and later a paramilitary leaderŽeljko Rebrača (born 1972), retired Serbian professional basketball playerŽeljko Rohatinski (born 1951), current Governor of the Croatian National BankŽeljko Samardžić (born 1955), Bosnian Serb pop-folk singerŽeljko Senečić (born 1933), Croatian film and television production designer, film director and screenwriterŽeljko Sošić (born 1980), young Montenegrin directorŽeljko Sopić (born 1974), Croatian football midfielderŽeljko Srdić (1977), Serbian contemporary hyperrealist artist and comic book artistŽeljko Stinčić (born 1950), former Croatian footballerŽeljko Tadić (born 1974), former Montenegrin footballerŽeljko Tanasković (born 1967), Serbian volleyball playerŽeljko Turk (born 1962), the current mayor of Zaprešić, a town in Zagreb County, CroatiaŽeljko Vincek (born 1986), Croatian sprinter who specializes in the 400 metresŽeljko Vuković (footballer, born 1962), Croatian-born Austrian footballerŽeljko Vuković (footballer, born 1963), Montenegrin footballerŽeljko Zagorac (born 1981), professional basketball playerZeljko Babic (born 1976), former association football player in the now defunct National Soccer League in AustraliaZeljko Bilecki (born 1950), retired Canadian soccer playerZeljko Gavrilović (born 1971), veteran Serbian footballerZeljko Loparić (born 1939), Croatian philosopher, historian of the philosophy and university teacherZeljko Marasovich, Croatian American composer of classical and film musicZeljko Radovic (Austrian footballer) (born 1974), Austrian football player