| 1964 | Clarence L. Johnson, Michigan Gamma '32 | aeronautical engineer, aircraft designer, designed the U-2 aircraft |
| 1964 | Frederick R. Kappel, Minnesota Alpha '24 | business leader, president of American Telephone and Telegraph Company |
| 1969 (with distinction) |
Dr. Buzz Aldrin Jr., Massachusetts Beta '62 | military officer, Apollo XI astronaut, mission in which man first stepped on the moon |
| 1970 | Fred W. Haise Jr., Oklahoma Alpha '59 | Apollo XIII astronaut, crew returned safely to earth after near fatal mission |
| 1977 (with distinction) |
Dr. John Bardeen, Wisconsin Alpha '28 | physicist, educator, winner of Nobel prize in physics, discoveries revolutionized electronics and communications industry |
| 1983 | Dr. Simon Ramo, Utah Alpha '33 | businessman, engineer, aerospace pioneer |
| 1987 | John A. McCone, California Alpha '22 | public servant, former director of Central Intelligence, under secretary of the Air Force |
| 1988 | David Packard, California Gamma '34 | public servant, businessman, philanthropist, former deputy secretary of defense, chairman of the President's blue ribbon commission on defense management. of Puerto Rico, industrialist, patron of the arts |
| 1991 | Don Luis A. Ferre, Puerto Rico Alpha '24 | public servant, former governor of Puerto Rico, industrialist, patron of the arts |
| 2005 | Dr. Robert E. Kahn, NY Eta '60 | designed the software code that is used to transmit data over the Internet |