Olaf Henning Thommessen is a Norwegian businessman and politician for the Liberal Party. He serves as a deputy representative to the Norwegian Parliament from Oslo during the term 2005–2009. On the local level he is a member of Oslo city council. Olaf Thommessen is a Roman Catholic of French and Norwegian descent. His mother was the late Anette Arosa Thommessen (1932-1994), a French national.