Jeff Yu, or Yu Ji-Young, (born October 30, 1978) is a former association football player.
Yu is the first American football (soccer) player to have played in the Korean K-League. He represented Ulsan Hyundai Horang-i in 2000 and Bucheon SK in 2001.
Yu had a brief spell with VfL Osnabrück in the German 2. Bundesliga.