Kim Seong-hyun is a former South Korean pitcher who formerly played for the Nexen Heroes and the LG Twins in the KBO League. He batted and threw right-handed.
Kim Sung-hyun is a South Korean footballer who plays as defender. He was selected by Gyeongnam FC in 2012 K-League Draft. He made his K-League debut match against Jeju on 3 November 2012.
A male bearer is Ko Sung-hyun, an internationally elite badminton player from South Korea and a female bearer is Park Sung-hyun, a world champion and former world number one archer from South Korea. She had held the women's world record for a 70m 72-arrow round, set at the 2004 Olympics in Athens, and won a gold medal with her team in both the 2004 and 2008 Olympics. She has the women's world record in a FITA Round with 1405 points.