Mateja Kežman (Beograd, 12. aprila 1979.) je bivši srpski fudbaler.
Igra na poziciji napadača. Karijeru je počeo u FK Zemun, a nastavio u Radničkom iz Pirota, FK Loznica i Sartidu iz Smedereva. U 19. godini je prešao u FK Partizan iz Beograda. U sezoni 1998-1999. je na 38 utakmica postigao 28 golova i postao najbolji strijelac lige. Prvi nastup u reprezentaciji Jugoslavije je odigrao u prijateljskom meču protiv Kine, u svibnju 2000. godine, u kome je i postigao gol. Do sada je za reprezentaciju postigao 16 golova.
U 21. godini prelazi u PSV iz Eindhovena i iste godine postaje najbolji strijelac holandske prve lige postigavši 24 gola u 33 utakmice. U Eindhovenu dobija nadimak Batman. Za ekipu PSV-a je postigao 81 gol za tri godine.
Nakon PSV-a prelazi u Chelsea iz Londona u sezoni 2004-2005. Nakon Chelsea potpisuje ugovor sa Atleticom iz Madrida. 2006-2007 Fenerbahçe Od 2009. godine igra za pariški PSG. Trenutno je na posudbi u Zenitu iz Sant-Peterzburga.
Mateja Kežman (Serbian Cyrillic: Матеја Кежман; born 12 April 1979) is a Serbian former professional footballer who played as a striker.
Upon playing in his homeland, Kežman went on to play top-flight football in the Netherlands, England, Spain, Turkey, France, Russia, Hong Kong and Belarus. Arguably, he is most known for his career at PSV Eindhoven, where he amassed numerous awards and world wide recognition as having the potential to be one of the greatest strikers of his generation; he was named Dutch Footballer of the Year in 2003. He was subsequently labeled as a flop after his spell at Chelsea, as there were extremely high expectations of him. By the end of his illustrious career, he had amassed a record amount of championship medals in the top-tier competitions of five different countries. Internationally, Kežman represented FR Yugoslavia / Serbia and Montenegro at the UEFA Euro 2000 and 2006 FIFA World Cup.
After finishing his professional playing career, Kežman became a sports agent. He also served as a director of football at Vojvodina in 2013.
His father, Zlatko Kežman, was also a footballer who played as a goalkeeper, spending the majority of his career with Zemun
Partizan
At the age of 19, Kežman joined Partizan. In two seasons at the club, Kežman made a name for himself as a prolific goalscorer and became a favourite among the fans of the club. He scored a total of 33 league goals in 54 appearances and was the top goalscorer of the national championship in the 1999–2000 season.