| 1953-57 | Charles E. Wilson, Pennsylvania Gamma '09 | secretary of defense |
| 1959-61 | Frederick H. Mueller, Michigan Alpha '14 | secretary of commerce |
| 1969-73 | John A. Volpe, Massachussetts Delta '30 | secretary of transportation |
| 1989-93 | D. Allen Bromley, Connecticut Alpha '48 | assistant to President George H. W. Bush for science and technology |
| 2005- | Samuel W. Bodman III, New York Delta '61 | secretary of energy |