Jonkheer John Hugo Loudon KBE (27 June 1905 – 4 February 1996) was the CEO of Royal Dutch Shell from 1952 to 1965 and the president of World Wide Fund for Nature.

[1] He joined the company in 1930, working in the oilfields of Lake Maracaibo, Venezuela.

[1][4] He resigned as the CEO of Shell in 1965 and continued to serve the company as chairman of the board of supervisory directors for the next 11 years.

[1] Following his role with Shell, Loudon was appointed the chairman of an international business advisory committee at Chase Bank by David Rockefeller.

Loudon spoke five languages and was a member of the Royal yacht Squadron.