Jitsuo is a unisex given name of Japanese origin, composed of two kanji characters: 'Jitsu' (実) meaning 'reality', and 'Uo' (魚) signifying 'fish'. The name Jitsuo was popular during the Edo period in Japan but has become less common over time. It is often chosen for its balance of traditional roots and unique sound, appealing to parents seeking distinctive yet meaningful names.
The name Jitsuo was quite popular around the time of World War I, with a notable spike in births during 1924. However, it seems to have fallen out of favor by the early 1930s as there were no recorded births after 1931.