Jin Sun-Yu (Korean: 진선유; Hanja: 陳善有, born December 17, 1988, in Daegu, South Korea) is a South Korean short-track speed skater.

She also finished first in the overall World Cup standings for the 2005–2006 season.

At the 2006 Winter Olympics, she won three gold medals, winning women's individual 1000 meters, and 1500 meters events, and as a member of the South Korean women's victorious 3000 meter relay team.

In doing so, Jin became the first athlete (by less than half an hour) from Korea to win three gold medals in one Olympics.

Ahn Hyun-Soo matched Jin's achievement later by helping Korea to win men's 5000 meters relay.