Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Ivano Zasio | ROW | Olympics | 1996 | 0–1–0 1997 Bari ROW silver: lightweight coxless fours | |
| Mohamed Zayar | WRE | Olympics | 1984—1988 | 0–0–2 1991 Athina WRE bronze: freestyle middleweight -82 kg; 1993 Linguadoca-Roussillon WRE bronze: freestyle middleweight -82 kg | |
| Ivan Zaytsev | VVO | Olympics | 2012—2020 | 1–0–0 2009 Pescara VOL gold | |
| Mohamed Zbir | BOX | Olympics | 1992—1996 | 0–1–0 1991 Athina BOX silver: light-flyweight -48 kg | |
| Vasilij Žbogar | SAL | Olympics / Opening Flagbearer | 2000—2016 | 1–0–1 2001 Tunis SAI bronze: Laser; 2005 Almería SAI gold: Laser | |
| Dragan Zdravković | ATH | Olympics / Non-starter | 1980—1984 | 0–1–0 1979 Split ATH silver: 1500 m | |
| Maja Zebić | HBL | Olympics | 2012 | 0–0–1 2005 Almería HAN bronze | |
| Slim Zehani | HBL | Olympics | 2000 | 0–0–2 2005 Almería HAN bronze; 2009 Pescara HAN bronze | |
| Moez Zemzemi | BOX | Olympics | 2000 | 0–0–1 2001 Tunis BOX bronze: flyweight -51 kg | |
| Matteo Zennaro | FEN | Olympics | 2000 | 0–1–0 2005 Almería FEN silver: foil | |
| Silvia Zennaro | SAL | Olympics | 2016—2020 | 0–1–0 2018 Tarragona SAI silver: Laser Radial | |
| Luciano Zerbini | ATH | Olympics | 1984—1992 | 2–1–0 1991 Athina ATH gold: discus throw, silver: shot put; 1993 Linguadoca-Roussillon ATH gold: discus throw | |
| Antar Zerguelaïne | ATH | Olympics | 2008 | 1–0–0 2009 Pescara ATH gold: 1500 m | |
| Mickaël-Méba Zézé | ATH | Olympics | 2016—2024 | 0–0–1 2018 Tarragona ATH bronze: 200 m | |
| Nina Zhivanevskaya | SWM | Olympics | 1992—2008 | 4–0–0 2001 Tunis SWI gold: 100 m backstroke, 200 m backstroke, 4×100 m freestyle relay, and 4×100 m medley relay (competed for Spain) | |
| Fang Zhu | TTE | Olympics | 2008 | 0–0–1 2009 Pescara TTN bronze: team | |
| Darko Zibar | ROW | Olympics | 1980 | 0–1–0 1979 Split ROW silver: double sculls | |
| Luciano Zinali | SAL | Olympics | 1972—1976 | 0–0–1 1975 Al-Jaza'ir SAI bronze: Flying Dutchman | |
| Giannis Zisimidis | ATH | Olympics | 1992—2000 | 0–1–1 1991 Athina ATH silver: 100 m; 1997 Bari ATH bronze: 4×100 m relay | |
| Andreas Zisimos | SWM | Olympics | 2004—2008 | 0–1–3 2005 Almería SWI silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay; 2009 Pescara SWI bronze: 4×100 m freestyle relay and 4×200 m freestyle relay | |
| Nikos Zisis | BKB | Olympics | 2004—2008 | 0–1–0 2001 Tunis BAS silver | |
| Ali Zitouni | FBL | Olympics | 2004 | 1–0–0 2001 Tunis FTB gold | |
| Zoran Živković | HBL | Olympics / Coach | 1972—2000 | 1–0–0 1967 Tunis HAN gold | |
| Freddy Zix | FBL | Olympics | 1968 | 1–0–0 1967 Tunis FTB gold | |
| Rajko Žižić | BKB | Olympics | 1976—1984 | 1–1–0 1975 Al-Jaza'ir BAS gold; 1979 Split BAS silver | |
| Jean Zizine | HOC | Olympics | 1952 | 0–0–1 1955 Barcelona HOK bronze | |
| Halil Zıraman | ATH | Olympics | 1948—1952 | 0–1–0 1951 Al-Iskanderiya ATH silver: javelin throw | |
| Andrija Zlatić | SHO | Olympics | 2004—2012 | 0–1–1 2009 Pescara SHO silver: 10 m air pistol, bronze: 50 m free pistol (competed for Serbia) | |
| Flavia Zoccari | SWM | Olympics | 2008 | 1–0–0 2009 Pescara SWI gold: 4×200 m freestyle relay | |
| André Zoéte | WRE | Olympics | 1956—1964 | 0–2–0 1959 Beirut WRE silver: freestyle flyweight -52 kg; 1963 Napoli WRE silver: freestyle flyweight -52 kg | |
| Karim El-Zoghby | EJP | Olympics | 2008—2016 | 0–0–1 2005 Almería EQU bronze: jumping individual | |
| Urška Žolnir | JUD | Olympics / Opening Flagbearer | 2004—2012 | 1–0–1 2005 Almería JUD bronze: half-middleweight -63 kg; 2009 Pescara JUD gold: half-middleweight -63 kg | |
| Aljoša Žorga | BKB | Olympics | 1968 | 1–0–0 1967 Tunis BAS gold | |
| Dragan Zorić | CSP | Olympics | 2000—2004 | 0–0–1 2005 Almería CAN bronze: K2 500 m | |
| Stevan Zorić | ATH | Olympics | 1992—2000 | 1–0–0 1997 Bari ATH gold: high jump (competed for FR Yugoslavia) | |
| Nebojša Zorkić | BKB | Olympics | 1984 | 1–0–0 1983 Casablanca BAS gold | |
| Branko Zorko | ATH | Olympics | 1988—2004 | 0–1–0 1997 Bari ATH silver: 1500 m (competed for Croatia) | |
| Andrea Zorzi | VVO | Olympics | 1988—1996 | 1–0–0 1991 Athina VOL gold | |
| Rizlen Zouak | JUD | Olympics | 2012—2016 | 0–0–1 2013 Mersin JUD bronze: half-middleweight -63 kg | |
| Hakim Zouari | VVO | Olympics | 2012 | 0–1–0 2013 Mersin VOL silver | |
| Georgia Zouganeli | ATH | Olympics | 1988 | 0–0–1 1987 Latakia ATH bronze: 4×100 m relay | |
| Zdravko Zovko | HBL | Olympics | 1984 | 4–0–0 1975 Al-Jaza'ir HAN gold, 1979 Split HAN gold, 1983 Casablanca HAN gold; 1993 Linguadoca-Roussillon HAN gold (competed for Croatia) | |
| Vedran Zrnić | HBL | Olympics | 2004 | 1–0–0 2001 Tunis HAN gold | |
| Vladimir Zrnić | WLF | Olympics | 1980 | 1–0–1 1975 Al-Jaza'ir WLT middleweight -75 kg bronze: clean & jerk; 1979 Split WLT gold: light-heavyweight -82.5 kg | |
| Petra Zublasing | SHO | Olympics | 2012—2016 | 1–2–0 2009 Pescara SHO silver: 10 m air rifle; 2013 Mersin SHO gold: 10 m air rifle, silver: 50 m small-bore rifle 3 positions | |
| Angelo Zucca | GAR | Olympics | 1976 | 0–1–1 1975 Al-Jaza'ir GYM silver: team, bronze: pommelled horse | |
| Pietro Zucchetti | SAL | Olympics | 2012—2016 | 0–1–0 2005 Almería SAI silver: 470 | |
| Dino Zucchi | BKB | Olympics | 1952 | 0–0–1 1951 Al-Iskanderiya BAS bronze | |
| Franco Zucchi | ROW | Olympics | 1988—1996 | 0–1–0 1991 Athina ROW silver: coxless pairs | |
| Giovanni Zucchi | ROW | Olympics | 1956—1964 | 2–0–0 1955 Barcelona ROW gold: coxless fours; 1963 Napoli ROW gold: coxless fours | |
| Nenad Žugaj | WRE | Olympics | 2012 | 1–0–1 2009 Pescara WRE gold: Greco-Roman light-heavyweight -84 kg; 2013 Mersin WRE bronze: Greco-Roman light-heavyweight -84 kg | |
| Neven Žugaj | WRE | Olympics | 2012 | 0–1–1 2009 Pescara WRE bronze: Greco-Roman middleweight -74 kg; 2013 Mersin WRE silver: Greco-Roman middleweight -74 kg | |
| Mohamed Zulficar | FEN | Olympics | 1948—1952 | 0–1–0 1951 Al-Iskanderiya FEN silver: sabre team | |
| Mauro Zuliani | ATH | Olympics | 1980—1984 | 0–1–0 1983 Casablanca ATH silver: 4×400 m relay | |
| Jaime Zumalacárregui | HOC | Olympics | 1980 | 0–1–0 1979 Split HOK silver | |
| Stipe Žunić | ATH | Olympics | 2016 | 0–1–0 2018 Tarragona ATH silver: shot put | |
| Maite Zúñiga | ATH | Olympics | 1988—1996 | 0–0–1 1997 Bari ATH bronze: 1500 m | |
| Juan Zunzunegui | ROW | Olympics | 2000—2004 | 0–0–1 2001 Tunis ROW bronze: lightweight double sculls | |
| Romana Župan | SAL | Olympics | 2012 | 0–1–0 2013 Mersin SAI silver: 470 | |
| Jernej Župančič Regent | CSP | Olympics | 2004—2008 | 0–0–1 2005 Almería CAN bronze: K1 1000 m | |
| Igor Zupančić | ATH | Non-starter | 1948 | 0–1–1 1951 Al-Iskanderiya ATH silver: 4×400 m relay, bronze: 400 m hurdles | |
| José Zurera | WLF | Olympics | 1988—1992 | 0–1–0 1991 Athina WLT silver: bantamweight -56 kg | |
| Franco Zurlo | BOX | Olympics | 1964 | 1–0–0 1963 Napoli BOX gold: bantamweight -54 kg | |
| Goran Žuvela | JUD | Olympics | 1976 | 1–0–1 1971 İzmir JUD gold: half-heavyweight -93 kg; 1979 Split JUD bronze: open class | |
| Denis Žvegelj | ROW | Olympics | 1992—1996 | 0–1–1 1993 Linguadoca-Roussillon ROW silver: coxless pairs; 1997 Bari ROW bronze: coxless fours | |
| Stavroula Zygouri | WRE | Olympics | 2004 | 0–1–0 2001 Tunis WRE silver: freestyle welterweight -62 kg |