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