Onni Alfred Hiltunen (26 November 1895 – 8 June 1971) was a Finnish politician, minister in several cabinets and chairman of the Social Democratic Party.

He worked at a social democratic paper in Varkaus 1931–1946.

Hiltunen was elected to the parliament for terms between 1930 and 1962 first from Northern and later from Southern Savonia electoral district.

Hiltunen was chairman of the Social Democratic Party between 1944 and 1946.

This article about a Social Democratic Party of Finland politician is a stub.