Trill OG is the third solo studio album by UGK member Bun B, and is the third album in his Trill series. The album was released under Universal Music Group after Bun B left Warner Music Group's Asylum Records. The album was released August 3, 2010 on Rap-a-Lot Records. On August 4, 2010, The Source Magazine gave Trill OG its rare 5 mic rating.