Mana Watanabe

is a Japanese women's professional shogi player ranked 3-dan. She is a former title holder. She is also the first women's professional to come out of the Ladies Professional Shogi-players' Association of Japan (LSPA) and subsequently be recognized as such by the Japan Shogi Association.

Women's shogi professional Watanabe's first appearance in a women's professional major title match came in MayJune 2018 when she challenged Kana Satomi for 29th title, and she won the match 3 games to 1. The two met again the following year in the 30th Women's Ōi title match (MayJune 2019); Watanabe was, however, unable to successfully defend her title, losing 3 games to 1.

Watanabe met Tomoka Nishiyama in the title match of the 1st tournament in SeptemberOctober 2021, but lost the match 4 games to none.

Watanabe challenged Kana Fukuma for the latter's Title in JulyAugust 2025, but lost 7th Seirei Title Match 3 games to none.

Promotion history Watanabe has been promoted as follows.

In addition, to Annual Shogi Awards, Watanabe received Ōta, Tokyo's "Meritorious Resident Award" in 2019.

Personal life Watanabe is married to shogi professional Hirotaka Nozuki. The two got married in January 2024. Watanabe stated that she will continue to complete professionally under her maiden name.

The posted on it's official website on March 30, 2026, that Watanabe would be taking a leave of absence from May 11 to July 31, 2026, due to childbirth.