Yoshirō Vladimir Irino (入野義朗) was a Japanese composer, born in Soviet Vladivostok. He attended high school in Tokyo and went on to study economics at Tokyo Imperial University (now University of Tokyo).
After World War II, Irino, along with colleagues Minao Shibata and Kunio Toda, studied the twelve-tone method of composition devised by Arnold Schoenberg. In 1951, Irino used the composition technique to compose his Concerto da Camera for Seven Instruments. This work is credited to be the first Japanese dodecaphonic composition. During the same time, the magazine Ongaku Geijutsu published two articles by Irino: "Schoenberg's Composing Technique" and "What is Twelve-Tone Music?" Subsequently, Irino used the twelve-tone technique in numerous compositions and wrote extensively about contemporary music. Working to introduce foreign contemporary music and music literature to Japan, he made Japanese translations of important books such as Die Komposition mit zwölf Tönen (12音による作曲技法) by Josef Rufer and Schoenberg and His School (シェーンベルクとその楽派) by René Leibowitz. Irino did not, however, compose serial music, a technique of the same period widely used with the Darmstadt School.
In 1973, the Asian Composers League was established by Irino and his colleagues. After his death, the Irino Award and the Yoshiro Irino Memorial Prize (sposored by the Asian Composers League) were established to promote young composers.