is a Japanese professional shogi player ranked 5-dan.
Mikio Kariyama was born in Kurashiki on November 12, 2001. He learned how to play shogi from his father, and was accepted into the Japan Shogi Association's (JSA) apprentice school at the rank of 6-kyà « under the tutelage of shogi professional Keita Inoue in September 2014.
Kariyama was promoted to the rank of apprentice professional 3-dan in 2019. He obtained full professional status and the corresponding rank of 4-dan in September 2021 after tying for first with Tomoki Yokoyama in the 69th 3-dan League (April 2021September 2021) with a record of 13 wins and 5 losses.
The promotion history for Kariyama is as follows.