| dipinto | picture |
| Dipinto ad olio | Oil painting |
| Diplocaulus | Diplocaulus |
| Diplodactylinae | Diplodactylinae |
| Diplodocidae | Diplodocid |
| Diplodocoidea | Diplodocoidea |
| Diplodocus | Diplodocus |
| diploide | diploid |
| diploma | diploma |
| Diploma di laurea | Degree |
| diploma di maturità | high school diploma |
| diploma di scuola superiore | high school diploma |
| Diplomacy | Diplomacy |
| diplomarsi | graduate |
| diplomata | graduate |
| diplomatica | diplomat |
| diplomatico | diplomatic |
| diplomato | graduate |
