| Cho Sonjin | |
|---|---|
| Full name | Cho Sonjin |
| Kanji | 趙善津 |
| Kana | チョウソンジン |
| Hangul | 조선진 |
| Hanja | 趙善津 |
| Revised Romanization | Jo Seon-jin |
| McCune–Reischauer | Cho Sŏn-chin |
| Born | April 18, 1970 South Korea |
| Residence |  Tokyo, Japan |
| Teacher | Takeo Ando |
| Turned pro | 1984 |
| Rank | 9 dan |
| Affiliation | Nihon Ki-in |
Cho Sonjin (Korean: 조선진; born April 18, 1970) is a professional Go player.
Cho was born in South Korea, but moved to Japan at age 12 in order to become a professional. He accomplished his goal two years later in 1984. He was promoted to 9 dan in 1998. In 1999, he defeated Cho Chikun in the Honinbo, ending Chikun's 10-year run with the title.