There have been 32 defensive back/safeties from UCLA in the NFL.
I omitted corner backs, and where I could not confirm what position a player played besides the generic Defensive Back, I kept them on the list for the answer. Those particular players have their position noted as DB/ . FS- Free Safety, SS - Safety, S - Safety
Defensive Backs/Safeties from UCLA that have played in the NFL (in no particular order):
NFL player Brandon Sermons played for UCLA.
NFL player Damien Thigpen played for UCLA.
NFL player Nate Chandler played for UCLA.
NFL player Christian Yount played for UCLA.
NFL player Rahim Moore played for UCLA.
NFL player Joseph Fauria played for UCLA.
NFL player Johnathan Franklin played for UCLA.
NFL player Datone Jones played for UCLA.
NFL player Justin Hickman played for UCLA.
NFL player Sheldon Price played for UCLA.
NFL player Marcedes Lewis played for UCLA.
NFL player Jeff Baca played for UCLA.