Masuo is a unisex Japanese given name that holds significant cultural importance. Derived from the kanji characters "麻" (ma, meaning "hemp") and "壽" (suo, meaning "longevity"), the name signifies strength, resilience, and longevity. It is often chosen by parents for their children as a wish for them to grow up to be robust individuals who lead long, healthy lives. Masuo is typically used more frequently among males in Japan but can also be found among females.
The name Masuo experienced fluctuating popularity between 1917 and 1927, with the highest number of births occurring in 1920 (11 births). The total number of births named Masuo during this period was 35.