An Jae-hyun (; born 25 December 1999) is a South Korean table tennis player.
He won a bronze medal at the 2019 World Table Tennis Championships.
An Jaehyun failed to qualify for the 2021 Tokyo Olympics despite tying for the best overall record at the Korean Olympic trials and going undefeated against top seed Jeoung Young-sik and second seed and eventual trial winner Lee Sang-su.
An Jae-hyun lost in the round of 16 to Hugo Calderano at the WTT Contender event in World Table Tennis' inaugural event WTT Doha. Despite only being ranked 39, An was able to avenge his World Championship semi-final loss to world ranked #8 Mattias Falck with a 3âÂÂ0 win in the round of 32.