First Battalion Four Marines
Killed In Action - Alphabetically
| Daut, Charles Williams | PFC | Alpha | Philadelphia | Pa | 8 May 67 | 21 |
| Davis, David Lee | PFC | H&S | Waterloo | Ia | 20 Mar 69 | 19 |
| De La Hoz, Carlos A M | PFC | Alpha | Yonkers | NY | 22 May 68 | 26 |
| Delgado, Raymond Rodriguez | L/Cpl | Charlie | Watsonville | Ca | 1 Mar 69 | 19 |
| Denhoff, William Michael | PFC | Delta | Seattle | Wa | 4 May 66 | 19 |
| Diaz, Alejadro | PFC | Bravo | New York | NY | 22 May 68 | 20 |
| Dickerson, Bernard Wendell, Jr | CPL | Alpha | Clarinda | Ia | 11 Jun 68 | 23 |
| Dickey, Douglas Eugene | PFC | Charlie | Rossburg | Oh | 26 Mar 67 | 20 |
| Dixon, Stephen Douglas | PFC | Alpha | Philadelphia | Pa | 10 May 67 | 21 |
| Dodd, Joseph James | PFC | H&S | Astoria | NY | 8 May 67 | 20 |
| Draughon, Isaac Ray | L/Cpl | Bravo | Dunn | NC | 13 Jul 68 | 20 |
| Dube, Andre Louis | CPL | Alpha | Livermore Falls | Me | 23 Aug 66 | 21 |
| Duffy, Daniel Walter | CPL | Delta | New York | NY | 31 Aug 65 | 20 |
| Dykes, William Frank | L/CPL | Alpha | Kingsport | Tn | 29 Oct 67 | 20 |
| Dyrdahl, Raymond Ernest | PFC | Charlie | Salt Lake City | Ut | 6 Dec 67 | 21 |