What is "sumio"

Sumio (written: 澄男, 澄夫, 澄雄 or 純男) is a masculine Japanese given name. Notable people with the name include:

• (born 1950), Japanese judoka

• (born 1939), Japanese physicist

• (born 1960), Japanese politician

• (1919–2010), Japanese poet

• (born 1948), Japanese composer and music producer