YC or yC may refer to:
- Y Combinator (company), a seed-stage startup funding firm
- Yury G. Chernavsky (Born March 17, 1947, Tambov, USSR), a Russian-American producer, composer and songwriter
- Youth Conference (Christian), an annual Christian conference
- Youth Conference (Hong Kong), a youth conference in Hong Kong
- An army 'Yellow Comet' in the game Advance Wars, by Nintendo and Intelligent Systems
- Yellowcard, an American pop-rock band
- Yellowstone Club, a Big Sky, MT private ski community.
- Yuba City, California
- Yahoo chat
- Yahoo! Calendar
- Yung Chris, a rapper
- Yakima County, Washington
- Yottacoulomb, an SI unit of electric charge
- Yoctocoulomb, another SI unit of electric charge
Christopher Miller (born November 6, 1985) better known by his stage nameYC Worldwide or simply YC, is an American rapper from Decatur, Georgia. He is perhaps best known for his commercial debut single " Racks", featuring Atlanta rapper Future, which peaked at number 42 on the Billboard Hot 100. Since then, several remixes and freestyles have been created of "Racks".