Leif Frode Onarheim (23 August 1934 – 9 September 2021) was a Norwegian businessperson and politician for the Conservative Party.
Onarheim was board member and chair of several enterprises. He served as President of the Federation of Norwegian Industries, and later of the Confederation of Norwegian Enterprise. He was appointed rector of the BI Norwegian Business School, and was elected member of the Storting from 2001 to 2005.