Odd Steinar Holøs (8 April 1922 – 31 August 2001) was a Norwegian politician for the Christian Democratic Party.
He met as a regular representative in 1972 and 1973 meanwhile Lars Korvald was Prime Minister.
In 1963, during the short-lived cabinet Lyng, he was appointed State Secretary in the Ministry of Social Affairs.
On the local level, Holøs served as deputy mayor of Rakkestad municipality from 1955 to 1967, and was a member of its executive committee during the term 1979–1983.
Outside politics he worked in newspapers among other things, as the editor-in-chief of Østfold Bygdeblad from 1945 to 1947 and 1957 to 1964 and a journalist in Vårt Land from 1946 to 1950.