When Caesar invaded Britain in 43 AD, he found that Britain was basically an island of tribes or independent nations which were frequently at war with one another. Each region had its prominent tribal groups and leaders. Celtic tribal society was dominated by chieftains who acted as political leaders.
This is a list of tribal leaders of Celtic Britain.
| # | Name | Period | Tribe |
|---|---|---|---|
| 1 | Calgacus | c83 AD | Caledoni |
| 2 | Addedomaros | c25 BC– 10BC | Trinovantes |
| 3 | Dubnovellaunus | c.10-5BC | Trinovantes |
| 4 | Mandubracius | Pre 54BC - c.20-15BC | Trinovantes |
| 5 | Tiberius Claudius Cogidumnus | c. 43 – c. 80 | Regnenses |
| 6 | Boudicca | 60–61AD | Iceni |
| 7 | Aesu[…] | c43AD | Iceni |
| 8 | Anted[ios] | c.25AD | Iceni |
| 9 | Can[…] | c.20AD | Iceni |
| 10 | Prasutagus | c.59AD | Iceni |
| 11 | Saenu[…] | c.45AD | Iceni |
| 12 | Anted[…] | c10BC – 30AD | Dobunni |
| 13 | Catti[…] | c5BC | Dobunni |
| 14 | Comux[…] | c1AD | Dobunni |
| 15 | Corio | End of the first century BC | Dobunni |
| 16 | Eisu[…] | c.30AD | Dobunni |
| 17 | Inam[…] | c50BC | Dobunni |
| 18 | Viroco | Cornovii | |
| 19 | Aun[…] | c.20AD | Coritani |
| 20 | Esup[…] | c.30AD | Coritani |
| 21 | Cartivel[…] | c.45AD | Coritani |
| 22 | Dumno[…] | c.40AD | Coritani |
| 23 | Vep[…] | C5-40AD | Coritani |
| 24 | Volisios | c45AD | Coritani |
| 25 | Cassivellaunus – King of the Catuvellauni | Military leader C 54BC– C20BC | Catuvellauni |
| 26 | Cunobelin | – | Catuvellauni |
| 27 | Tasciovanus Catuvellaunum | 20BC– 9BC | Catuvellauni |
| 28 | Caratacus- Prince of the Catuvellauni | ? – c50 | Catuvellauni |
| 29 | Father of Tasciovanus | c.20BC | Catuvellauni |
| 30 | Adminius | – | Catuvellauni |
| 31 | Andoco | c.15BC-c.10AD | Catuvellauni |
| 32 | Dias | c.15BC-c.10AD | Catuvellauni |
| 33 | Sego[…] | c.15BC-c.10AD | Catuvellauni |
| 34 | Togodumnus | – | Catuvellauni |
| 35 | Venutius | – | Carvetii |
| 36 | Carvilius | 54 BC | Cantiaci |
| 37 | Cingetorix | 54 BC | Cantiaci |
| 38 | Dubnovellaunus | c40 or 30BC | Cantiaci |
| 39 | Segovax | c54BC | Cantiaci |
| 40 | Vosenios | – | Cantiaci |
| 41 | Cartimandua – Queen of the Brigantes | 43 – c. 69 | Brigantes |
| 42 | Vellocatus | c. AD 52 – c. AD 69 | Brigantes |
| 43 | Verica | c. 15 – c. 42 | Atrebates |
| 44 | Commius – King of the Atrebates | c. 30BC – c. 20BC | Atrebates |
| 45 | Commius the Younger | 35–20BC | Atrebates |
| 46 | Eppillus | c. 20BC – c. 15 | Atrebates |
| 47 | Tincommius | c25 BC– 7AD | Atrebates |
| 48 | Epaticcus | – |