Ha Jae-Hoon (born October 29, 1990) is a South Korean professional baseball outfielder and pitcher for the SSG Landers of the KBO League.

He was formerly an outfielder in Nippon Professional Baseball (NPB) for the Tokyo Yakult Swallows in 2016 but converted to pitching full-time when he joined the KBO.

Ha spent 2010 with the Single-A Peoria Chiefs, playing in 77 contests and batting .317/.334/.468 with seven home runs, 46 RBI, and nine stolen bases.

[3] Ha spent the entirety of the 2012 season with Tennessee, playing in 121 games and hitting .273/.352/.385 with six home runs, 47 RBI, and 11 stolen bases.

[12] He made 15 appearances for the club in 2020 due to shoulder troubles, and struggled to a 7.62 ERA with 10 strikeouts and 4 saves across 13 innings of work.