A novelist Ryotaro SHIBA described Itagaki with such expressions as "Itagaki was far from suitable as a civil officer, (...) no occupation but being a soldier fits him" in his novel "Tobu ga gotoku."
作家の司馬遼太郎は「翔ぶが如く」の中で「板垣に文官など務まるはずがなく(中略)軍人以外にどういう仕事も適していない」などと評している。