James G Watt
Reagan's Secretary of the Interior
John Berry
Director, Office of Personnel Management (Confirmed 4-03-09)
J Steven Griles
Lobbyist, former Deputy Secretary of the Interior
Richard R Roldan
Propane lobbyist
Stewart Udall
Brother of the late 15-term congressman Morris Udall, served 6 years in Congress as a Democrat from Arizona, and then headed the Interior Department for 8 years under Presidents Kennedy and Johnson
Orme Lewis
Assistant Secretary of the Interior
Harold L Ickes
Secretary of the Interior, 1933-1946
Gale Norton
Secretary of Interior under George W Bush