YC or yC may refer to:
Arts and entertainment Yellowcard, an American pop-rock band Yellow Claw (DJs), Dutch DJ duo Yung Chris, rapper Yury G. Chernavsky (born 1947), a Russian-American producer, composer and songwriter
Businesses and organizations Y Combinator, a seed-stage startup funding firm Yale College, the liberal arts college of Yale University Youth Conference (Hong Kong), a youth conference in Hong Kong Yugoslav Committee, founded 1915, sought independence from Austria–Hungary
Places Yakima County, Washington Yellowstone Club, a private ski community in Big Sky, Montana, US Yuba City, California
Science and technology Yamnaya culture (YC), an archaeological culture S-Video (Y/C), a signaling standard for standard definition video Yottacoulomb, an SI unit of electric charge Yoctocoulomb, another SI unit of electric charge
Sport
Yugoslav Cup
Military A US Navy hull classification symbol: Open barge (YC)