Harm van Riel (18 February 1907 – 13 December 1980) was a Dutch politician of the People's Party for Freedom and Democracy (VVD) and businessman.
He served as a Member of the Senate from 6 November 1956 until 5 June 1963, and from 2 July 1963 until 3 June 1976.
He was the Parliamentary leader of People's Party for Freedom and Democracy in the Senate from 24 March 1959 until 3 June 1976.
A colourful politician, he was a mentor to former Party Leader of the People's Party for Freedom and Democracy Hans Wiegel during his leadership.