5 Oh Trees was a gangsta rap group from Portland, Oregon, produced by Keegan Quinn with raps by a number of local underground rappers, including Big Nutz, Celebrity Johnson, Bluntman and Dose. The group gets their name from the city's original area code, 503.

This group was active from 2003 to 2009. Keegan and Big Nutz are now working on a new project called HRD.