Seo Bong-soo (Korean: 서봉수; born February 1, 1953) is a professional Go player.

During their career, Seo and Cho played against each other in more than 350 official games, which is a world record.

He was a part of the "Gang of Four"[2] of Korean Go in 1990s, the rest being Cho Hunhyun, Lee Chang-ho, and Yoo Changhyuk.

He played as fourth captain for Korea, and singlehandedly beat the entire Chinese team as well as what was left of the Japanese team—a winning streak of 9 straight games.

This biographical article relating to a South Korean Go figure is a stub.