Kunio is a masculine Japanese given name. It is composed of two kanji characters: ' Kun' (國), meaning 'country,' and 'Yo' (陽), meaning 'sun.' Thus, the name means 'sun of the country.' Kunio was particularly popular during Japan's Taisho period (1912-1926). Notable individuals with this name include Japanese actor Kunio Murai and former professional baseball player Kunio Komatsuda.
The name Kunio had a significant run of popularity between 1918 and 1925 with peaks in 1921 (7 births) and 1924 (10 births), but its usage declined afterwards, with only 5 births recorded in 1940.