Quincy Brooks IV (born October 24, 1977), better known by his stage name San Quinn, is an American rapper from San Francisco, California. He is the cousin of Messy Marv, Stevie Johnson, and Ya Boy.
Brooks was born in Oakland, California, and grew up in the Fillmore district of San Francisco since the age of three. He attended George Washington High School.
Brooks made his first rap appearance as an opening act for 2pac and Digital Underground at the age of 12. He recorded his first album at 15 years old. In addition to a solo career, Brooks is also a member of the San Francisco rap group Get Low Playaz with JT The Bigga Figga, D-Moe, and Seff Tha Gaffla. One of Brooks' most notable tracks is "Shock the Party", which samples Whodini's "One Love". The video for "Shock the Party" was filmed in the Fillmore district of San Francisco in the now-defunct Buena Vista Plaza East public housing towers, commonly referred to as OC (Outta Control) Housing Projects.