Name Ruled
Augustus 27 BC-14 AD Pax Romana begins
Tiberius 14-37 AD  
Caligula 37-41 Julio - Claudian
Claudius 41-54  
Nero 54-68  
Galba 68-69  
Otho 69  
Vitellius 69  
Vespasian 69-79  
Titus 79-81 Flavian
Domitian 81-96  
Nerva 96-98  
Trajan 98-117  
Hadrian 117-138 Five Good Emperors
Antoninus Pius 138-161  
Marcus Aurelius 161-180 Pax Romana ends
Commodus 180-192  
Pertinax 193  
Didius Julianus 193  
Septimius Severus 193-211  
Caracalla 211-217  
Macrinus 217  
Heliogabalus 218-222  
Alexander Severus 222-235  
Maximinus 235-238  
Gordian I and 238  
Gordian II (jointly)    
Pupienus and 238  
Balbinus (jointly)    
Gordian III 238-244  
Philip the Arabian 244-249  
Decius 249-251  
Gallus 251-253  
Aemilian 253  
Valerian and Gallienus 253-260  
(jointly)    
Gallienus 260-268  
Claudius II 268-270  
Aurelian 270-275  
Tacitus 275  
Probus 276-282  
Carus 282-283  
Carinus and Numerianus 284  
(jointly)    
Diocletian 284-305 Empire split into East and West
Diocletian and 286-305  
Maximianus (jointly)    
Constantius Chlorus 305-306  
(West) jointly with    
Galerius (East)    
Galerius (East) 305-311  
Maxentius (West) 306-312  
Constantine the Great 306-337 Constantinople built at Byzantium
(West, later all) jointly    
with Licinius (East)    
Licinius (East) 307-323  
Constantius (East, 337-361  
later all) jointly with    
Constantine II (West) 337-340  
and Constans (Africa) 337-350  
Julian 361-363  
Jovianus 363-364  
Valentinian I (West) 364-375  
Valens (East) 364-378  
Gratian (West) jointly 375-383  
with Valentinian II    
Valentinian II 375-392  
Theodosius I (East, 379-395  
later all)    
Western Empire    
Honorius 395-423  
John 424  
Valentinian III 425-455  
Maximus 455  
Avitus 455-456  
Majorian 457-461  
Libius Severus 461-465  
Recimir 465-467  
Anthemius 467-472  
Olybrius 472  
Glycerius 473  
Julius Nepos 473-475  
Romulus Augustulus 475-476