| Ko Reibun | |
| Fullname: | Ko Reibun |
| Chinese: | 孔令文 |
| Pinyin: | Kǒng Lìngwén |
| Kana: | こうれいぶん |
| Birth Date: | 24 September 1981 |
| Birth Place: | Hebei, China |
| Residence: | Japan |
| Teacher: | Yasuro Kikuchi |
| Turnedpro: | 1997 |
| Rank: | 7 dan |
| Affiliation: | Nihon Ki-in |
Ko Reibun (; born September 24, 1981, in Hebei), né Nie Yuncong, is a professional Go player.
Rin became a professional in 1997. He is the son of one of the greatest Chinese players, Nie Weiping 9 dan, and his mother is Kong Xiangming 8 dan.[1] He moved to Japan to study under Yasuro Kikuchi. He is a Nihon Ki-in pro taking part in tournaments.[2]
He is now a naturalised Japanese, and has a Japanese wife Kobayashi Sayaka, daughter of Kobayashi Satoru.[3] He is currently 6 dan.