横山　信義（よこやま　のぶよし）Nobuyoshi Yokoyama

一九九二年、書き下ろし長編「鋼鉄のレヴァイアサン」（徳間書店）によりデビュー。
以後は、第二次世界大戦を扱った架空戦記小説を中心に執筆。
作品は、全五～六巻程度のシリーズ物が多くを占める。
二〇二三年現在、年間五、六冊のペースで執筆活動を継続している。
近作は「不屈の海」「荒海の槍騎兵」「烈火の太洋」（中央公論新社Ｃ★ＮＯＶＥＬＳ）等。

Nobuyoshi Yokoyama was born in 1992. He made his debut with the novel Kōtatsu no revaiasan (The Steel Leviathan), published by Tokuma shoten. Since then, he has mainly written fictional war stories based on World War II. Most of his works consist of series comprising five to six volumes, and he writes at a pace of five to six books a year. His recent works include Fukutsu no umi (The Unconquerable Sea), Araumi no sōkihei (The Lancers of the Wild Sea), and Rekka no taiyō (The Ocean of Raging Fire), published by Chuōkōron shinsha.