Shinobu Iwane (岩根 忍, Iwane Shinobu, born March 16, 1981) is a Japanese women's professional shogi player ranked 3-dan.

[1] Iwane's promotion history is as follows.

Iwane has appeared in major title matches three times, but has yet to win a major title.

She was the challenger for the 2nd MyNavi Women's Open Jo-Ō [ja] title in 2009, the 18th Kurashiki Tōka Cup [ja] title in 2010 and the 27th Women's Ōi [ja] title in 2016, but lost each time.

[3] Iwane received the Japan Shogi Association's Annual Shogi Award for "Women's Professional Most Games Played" for the April 2009 – March 2010 shogi year.