Oh Jea-Han (born in Namyangju) is a South Korean bobsledder.
Oh competed at the 2014 Winter Olympics for South Korea. He teamed with driver Kim Dong-Hyun, Kim Sik and Kim Kyung-Hyun in the South Korea-2 sled in the four-man event, finishing 28th.
Oh made his World Cup debut in December 2013. As of April 2014, his best World Cup finish is 25th, in 2013-14 at Lake Placid.