Özgür Çevik (1981-) is a Turkish singer and actor who gained fame and an intense fan following as a result of having appeared in his country's version of the television pop music talent contest, Star Academy and, subsequently, as a variety performer and actor.
Several Turkish football players born in the late 70's & early 80's. Also a Turkish newspaper called Özgür Gündem, which means The Free Agenda. 1976 to 1980 was a time of political violence between the right-wing ultra-nationalists and left-wing groups in Turkey, so that probably has something to do with the choice of this name during that period. I know a girl called Özgür, so it's unisex, as is freedom. :)