| Nominativ | cataphractarius, cataphractaria, cataphractarium | cataphractaria, cataphractarii, cataphractariae |
| Genitiv | cataphractarii, cataphractarii, cataphractariae | cataphractariorum, cataphractariorum, cataphractariarum |
| Dativ | cataphractario, cataphractario, cataphractariae | cataphractariis |
| Akkusativ | cataphractariam, cataphractarium, cataphractarium | cataphractaria, cataphractarios, cataphractarias |
| Ablativ | cataphractario, cataphractario, cataphractaria | cataphractariis |
| Vokativ | cataphractaria, cataphractarium, cataphractarie | cataphractaria, cataphractarii, cataphractariae |
