Ryūma Tonari (都成 竜馬, Tonari Ryūma, born January 17, 1990) is a Japanese professional shogi player ranked 7-dan.

[2] In 2000, Tonari defeated fellow future professional Taichi Nakamura to win the 25th Elementary School Student Meijin Tournament [ja] as a fifth-grade student at Miyazaki Ehira Elementary School.

[3][4] Tonari entered the Japan Shogi Association's apprentice school at the rank of 6-kyū as a student of shogi professional Kōji Tanigawa in September 2000.

He was promoted to the rank of 3-dan in October 2007, and he became the only apprentice professional 3-dan to win the Shinjin-Ō [ja] tournament when he defeated shogi professional Tetsuya Fujimori 2 games to 1 for the 44th Shinjin-Ō title in October 2013.

[7] Tonari received the Japan Shogi Association Annual Shogi Award for "Special Game of the Year" for the 2014 Shogi Year for his game against Mitsunori Makino in the Round 2 of the 46th Shinjin-Ō [ja] tournament.