Notable Delta Sigs
Sports:
| Mike Shanahan | Head Coach, Denver Broncos |
| Mike Bellotti | Head Football Coach, University of Oregon |
| Joe "Rusty" Tiller | Head Football Coach, Purdue University |
| Tim Mooney | Head Baseball Coach, Washington State University |
| Clair F. Bee | Retired Coach, Washington Bullets |
| S. Sam Boghosian | Retired Assistant Coach, Oakland Raiders, Seattle Seahawks |
| Mark Mosely | Retired Kicker, Washington Redskins |
| Jim Bouton | Retired Pitcher, New York Yankees Author, actor, producer, writer, sportscaster Inventor of Big League Chew |
| Ralph E. Cindrich, JD | Sports Agent/Lawyer Retired Linebacker, Houston Oilers |
| Herb "Fritz" Crisler | Retired Head Coach, Michigan |
| Gary Grandy | Miami Dolphins |
| Michael W. Heimerdinger | Offensive Coordinator, Tennessee Titans |
| Clifford L. Jackson | Retired Pitcher, Baltimore Orioles |
| Jack Knott | Pitcher, Chicago White Sox |
| Chester B. Marcol | Retired Kicker, Green Bay Packers |
| Dr. Rev. Donn D. Moomaw | 4 year All-American Football, UCLA |
| Edwin C. Morgan | Chicago White Sox |
| "Red" O'Quinn | Receiver, Chicago Bears |
| William E. Peterson | Retired Head Coach, Houston Oilers |
| Eddie Price | NCAA Football Hall of Fame |
| Norman B. Snead | Retired Quarterback, NY Giants |
| Paul W. Spilttorff, Jr. | Retired Pitcher, Kansas City Royals |
| Thomas S. Van Galder | Retired QB, St. Louis Cardinals |
| Leonard Hess | Owner, New York Jets |
| Virgil E. Wagner | CFL Hall of Fame |
| Chris Cole | Wide Receiver, Denver Broncos |
Corporate America:
| Frank T. Carey | Retired Chairman/CEO, IBM |
| Lee O. Hills | Chairman Emeritus, Knight-Ridder |
| L.C. Hoeft | Chairman/CEO, Caterpillar |
| Tom Heckert | Director of Player Personnel, Philadelphia Eagles |
| William E. Moore | President, Kelly-Moore Paints |
| Michael G. Morris | CEO, Northeast Utilities |
| Thomas Orlando | Retired President, Sinclair Oil |
| Harold J. Seigle | Retired President, Head Skis |
| Milton L. Selby | President, Safeway |
| Harold K. Smith | Retired Vice President, King Edward Cigars Inventor of Swisher Sweets |
| Dr. Keith B. Farr | Board of Directors, Advanced Optical Systems |
| Charles R. Walgreen, III | Retired President, Walgreens |
| Gilber P. Williamson | Retired Chairman, NCR |
| Marc Womack | Director of Advertising, ConsumptionJunction.com |
Education:
| Dr. Rev. Lawrence Biondi | President, St. Louis University |
| Dr. Robert L. Carothers | President, University of Rhode Island |
| Dr. William A. Kinnison | President Emeritus, Wittenberg University |
Arts & Entertainment:
| Giti Khalsa | Drummer, Seven Mary Three |
| Lee T. Hoffman | Author |
| Frank G. Slaughter | Author |
| Faber B. Birren | Author/Color Expert |
| Dr. Richard D. Parker | Author |
Government:
| Sen. Tom Harkin | Iowa |
| E. Ross Adair | Former US Congressman, Indiana Former US Ambassador to Ethiopia |
| George V. Allen | Former US Ambassador to India |
| Albert P. Brewer | Former Governor, Alabama |
| C. Wayland Brooks | Former US Senator, Illinois |
| James J. Davis | Former Senator, Pennsylvania Former Secretary of Labor |
| Michael K. Deaver | Deputy Cheif of Staff, Reagan Administration |
| Roman S. Gribbs | Former Mayor of Detroit |
| Hon. Albert S. Harrison | Former Governor, Virginia Former Senator, Virginia Former Supreme Court Justice Former Cabinet Member |
| Mike Hayden | Former Governor, Kansas |
| Rep. Tim Ryan | Florida |
| Robert F. Jones | Former Congressman, Ohio |
| Edward Herbert | Former Congressman, Louisiana |
| William J. Hughes | Former Congressman, New Jersey Ambassador to Panama |
| Robert J. Lagomarsino | Former Congressman, California |
| Richard W. Leche | Former Governor, Louisiana |
| John McLaughlin | Deputy Director of the CIA |
| Harvey Mechan | Former Congressman, Missouri |
| Frank W. Mueller | US Chamber of Commerce |
| Arlan Stangeland | Former Congressman, Minnesota |
| Rep. John B. Sullivan | Missouri |
| Rep. William Todd Tiahrt | Congressman, Kansas-went to SDSM&T as a Freshman |
| Michael R. Turner, JD | Former Mayor, Dayton Ohio |
| Wayne Ewing | Former Senator, Pennsylvania |
| Farrell Roberts | Former Senator, Michigan |
| Lloyd Wheat | Former Congressman, Louisiana |
| Lon A. Scott | Former Congressman, Tennessee |
Military:
| Col. Fred T. Wilson | US Army, Purple Heart Recipient |
| Thomas Ryan | US Navy, Congressional Medal of Honor Recipient |