'Get Your Geek On. Support the Library' is an ad campaign by Leo Burnett of Chicago. OCLC (Online Computer Library Center), a Gates Foundation-funded nonprofit library cooperative, undertook the promotion in an effort to rally support for public libraries.

The 'Get Your Geek On. Support the Library' ads feature celebrities and well-known professionals photographed by Timothy Greenfield-Sanders. There is an interactive component as well. Fill out a form or submit a video and you too can tell the world how you get your geek on.