Cho Chien (兆 乾, also written Cho Chen), born 2 July 1991, is a 2 dan professional of the Nihon Ki-in (Kansai branch). Student of Ishii Kunio 9 dan.
Chien qualified as a professional in 2007. She reached the challengers' semifinal of the 27th Female Honinbo (beating Kobayashi Izumi on the way).
She also made it to the challengers' final of the 12th Female Kisei, but lost to Kato Keiko.
In 2013, she was promoted to 2 dan.