The In memoriam Registry recognizes departed colleagues, family and friends who have served within the cryptologic community at some time during their careers. Their names and those of their sponsor(s) are recorded in calligraphy and the certificate is entered in a leather and gold bound registry for a contribution of $100 or more. The registry is a prominent part of the entry wall exhibit.
| Honoree | Sponsor |
| Adams, Olln B. | William G. Volenick |
| Andrews, Alfred W. | Anonymous |
| Aquilea, Mary Clementine | Sarah L. Botsai |
| Alde, Robert | The Wednesday Breakfast Bunch Eugene Becker |
| Axtell, Marcia | Ned Axtell |
| Barlow, Howard | Benjamin & Susan D. Hoover |
| Beath, Ernest B. | Eleanor P. Beath |
| Benjamin, Robert S. | Mr. & Mrs. Charles E. Girhard |
| Berry, Carrie | Mr. & Mrs. Charles E. Girhard |
| Bladey, Stephen C. | Harry G.Rosenbluh |
| Blake, Gordon A. Lt. Gen. USAF (Ret.) Dirnsa 1962-1965 |
Maj. Gen. John Morrison, Jr. USAF (Ret.) |
| Boak, David G. | Robert Cefail Susan D. and Benjamin N. Hoover |
| Boenning, William R | The Wednesday Breakfast Bunch |
| Braeuninger, Dale | Kathleen Braeuninger |
| Brown, Hollis | Anonymous |
| Callahan, Harrol "Cal" | The Wednesday Breakfast Bunch |
| Cassidy, Annette B. | Estate of Annette B. Cassidy |
| Chadwick, Douglas E. | Mr. & Mrs. Donald M. Gish |
| Chestnut, George L. | Wayne Stoffel |
| Chiles, James Richard (Dick) | Susan D. and Benjamin N. Hoover |
| Clapper, Sr., Col James R. | Lt Gen James R. Clapper, Jr. Chris Babish Michael Clapper |
| Clark, Jr., Earl David | K. Janet Clark and children – Terri Lynn and Diane Susan D. and Benjamin N. Hoover |
| Cole, William M. | Mr. & Mrs. Charles E. Girhard |
| Davis, Wilma Z. | Mr. & Mrs. Charles E. Girhard |
| DeCamp, Sr., Paul W. | Rita DeCamp and his children |
| DeCourt, Henry F. | Anonymous |
| Deeley, Walter G. | Patricia Deeley and children – Patricia, Edward James, Brian, Kathleen, Kevin, Maureen and Sean John F. Morrison, Jr., Maj Gen USAF (Ret) |
| Dewey, Thomas R. | Leonard Posa |
| Douglas, James | Anonymous |
| Dunbar, Jr., Horace “Ted” | CSS Associates Architects |
| Duncan, James T. | Harry G. Rosenbluh |
| Eachus, Joseph J. | Sons Alan and James Eachus |
| Filby, P. William | Jeannette M. Harper |
| Filby, Vera Ruth | Friends and Colleagues from NSA and the NCM |
| Garofalo, Anthony A. | Gary Garofalo, Jean Hogue, John Garofalo, James Garofalo, Donald Garofalo |
| Garofalo, C. Carlo “Gary” | Anthony J. Garofalo and Wayne Stoffel |
| Gerson, Nathaniel C. | Harry G. Rosenbluh |
| Gilbertson, Eugene A. | Lois Gilbertson |
| Gorman, Joseph S. | Nancy & David Rogers |
| Gould, Robert E. | Harry Rosenbluh |
| Griffin, Fred | Anonymous |
| Gurin, Jack | Milt Zaslow Harry Rosenbluh |
| Haenchen, Lt Col Otto E. | Michael & Mary White |
| Hall, Samuel R. | Anonymous |
| Hiser, Col Charles H. | Mr. & Mrs. Charles Girhard |
| Hogan, Douglas | Douglas Price |
| Hohenberger, Bonnie | NCM & NCMF friends and associates |
| Hong, Samuel Kyung Sook “Sam” | David W. Gaddy |
| Jackson, Jr., William J. | Harry G. Rosenbluh |
| Jaffe, Dr. Sydney | Annette K. Jaffe |
| Jenkins-Riley, Virginia | Harry Rosenbluh |
| Jenkins, William H. | Harry G. Rosenbluh |
| Johnson, Jenkins | James Pryde |
| Jones, Reece | Eugene Becker & Harry Rosenbluh |
| Kallenbach, John | Len M. Posa |
| Kane, Thomas L. | Anonymous |
| Kaye, Jack G., Capt, USN (Ret) | Capt & Mrs. Robert M. Barr, Jr., USN (Ret) |
| Keer, Viola "Johnny" | David Gaddy |
| Klar, Norman, Capt, USN (Ret) | Harry G. Rosenbluh |
| Lang, Delmar C., Lt Col, USAF (Ret) | Admirers and Colleagues |
| Larkin, John J. | John F. Morrison, Jr., Maj Gen USAF (Ret) Robert E. Rich Walter P. Sharp Helen E. Edwards |
| Ledvina, Capt Jerome P. | Harry G. Rosenbluh |
| Marks, William O. | Benjamin N. Hoover Richard J. Shaker & Colleagues |
| McGinnis, George P., Capt, USN (Ret) | Harry G. Rosenbluh |
| Mitchell, Madison & Hazel | Anonymous |
| Mollick, John | Harry Rosenbluh |
| Monroe, John J. | Anonymous |
| Moodispaw, Estelle | Charlotte Moseley Girhard |
| Morris, George W. | Anonymous |
| Mowry, David Phillip | The Center for Cryptologic History, NSA, & Agency Colleagues |
| Neff, Col. Paul E. | Mr. & Mrs. Charles Girhard Mr. & Mrs. Martin Maltenfort |
| Nielson, James R. | Anonymous Walter P. Sharpe |
| O’Brien, Thomas | Edith G. O’Brien & Anonymous |
| O’Connor, Francis X. | Jean O’Connor and children – Peter, Chris, and Debbie Susan D. and Benjamin N. Hoover |
| O’Rourke, Helen M. | Dollie S. Canard |
| Page, Ryon A. | Susan D. and Benjamin N. Hoover |
| Palakanis, Joseph | Harry Rosenbluh |
| Phillips, Nancy C. | Anonymous |
| Phillips, Cecil J. | Phillips children – Mary, Jeff and Chris |
| Porrino, Francis X. | A. Dea Porrino |
| Prugh, Tom | Wednesday Breakfast Brunch |
| Reimers, Paul R. | Anonymous Walter P. Sharp |
| Richard, Joseph | Mr. & Mrs. David Hendershot Mr. & Mrs. Edgar Duin Mr. & Mrs. Clifton Link, Jr. |
| Rock, Marion | David Gaddy |
| Sheck, Eugene | Eugene Becker, Morris Levine, Anthony Bellotte, George Fromm, Jack O'dell, Walton Sullivan, Charles Semich |
| Shinn, Dr. L. E. “Larry” | David W. Gaddy |
| Sinkov, Dr. Abraham | Mr. & Mrs. Charles E. Girhard |
| Snyder, Samuel S. | Harry Rosenbluh |
| Speierman, Kermith H. | Doris M. Speierman |
| Swift, Katharine L. | Harry Rosenbluh Walter Sharp< |
| Tanner, Jessie L. | Eugene Sattler |
| Terry, Lawrence D. | Susan Terry Clapper |
| Tevis, Charles C. | Anonymous |
| Tharp, Robert N. | Yale Institute of Far Eastern Languages & USAFSS Alumni |
| Tilley, Michie “Mike” | David W. Gaddy Fred & Marie Wendt |
| Ward, Julia | Anonymous |
| Winkler, Wallace | Mr. & Mrs. Charles E. Girhard |