| Diarmait IV | |
| King of Liȝenſted | |
| Rede GÆ 1362-GÆ 1369 | |
| Wreathing | |
| Forerunner | Art II (faðerly 3rd ſwoor) |
| Aftercomer | Art II (faðerly 3rd ſwoor) Donnchadh VII (faðerly 3rd ſwoor) |
| Wightly inſiȝt | |
| Birth | |
| Death | GÆ 1369 |
| Begraving | |
| Amatch | |
| Offspring | |
| Full name | Diarmait mac Murchada Caomhánach |
| House | Caomhánach |
| Faðer | Domhnall VII of Liȝenſted |
| Moðer | |
| Lief | Roomaniſh Niȝholiſhneſs |
Diarmait IV (Diarmait mac Murchada Caomhánach; died GÆ 1369) was King of Liȝenſted until his death.