Shin Jinseo (신진서) is Korean professional player born in 2000-03-17, pro from 2012-07-16, promoted 2 dan in 2013-11-22, 9 dan by 2018.
- In January 2013 aged 12 he beat Lee Changho 9d in a young players vs legends exhibition match. See https://gogameguru.com/go-commentary-shin-jinseo-vs-lee-changho/
- Winner in 2013 of the 2nd Yeongjae.
- Winner in 2015 of 2nd [Letís Run Park Cup].
- Winner in 2015 of 3rd Shinin-Wang.
- Made last 8 of 21st LG Cup in 2016.
- April 2017: won 4th Globis Cup
- Winner of 2017 Korean Baduk League as top player (15 wins, 3 losses) of Team Jungkwangjang.
- February 2018: runner up of 1st Crown Haitai Cup?, losing 1-2 to Park Junghwan
- April 2018: 3rd place in 5th Globis Cup
- May 2018: won 23rd GS Caltex Cup, beat Lee Sedol 3-2
- 2nd place in 2018 Korean Baduk League as top player (14 wins, 3 losses) for Team Jungkwangjang.
- December 2018: runner up in 1st Tianfu cup?, losing 1-2 to Chen Yaoye
- January 2019: runner up in 4th Bailing cup, losing 0-2 to Ke Jie
In December 2017, he was the highest-rated under-20 player in the world (on GoRatings), at #2 overall in Korea and #4 in the world. By late 2018 he was #1 in the world and made the finals of several international tournaments but is yet to win one.