August 31
Commodus born as Lucius Aelius Aurelius Commodus to Marcus Aurelius and Faustina the Younger in Lanuvium.
Galen arrives in Rome. He soon serves as primary doctor to Marcus Aurelius, and then for most of the life of Commodus.
The elder twin brother of Commodus, Titus Aurelius Fulvus Antoninus, dies.
October 12
Commodus made Caesar along with his younger brother, Marcus Annius Verus.
Marcus Annius Verus, the younger brother of Commodus, dies during an operation.
October 15
Commodus given the title Germanicus at Carnuntum, during the Marcomannic Wars headed by Marcus Aurelius.
On hearing that Marcus Aurelius is ill, Avidius Cassius declares himself emperor in Syria. He is defeated and killed. Clodius Albinus serves with distinction in the campaign. Rumors abound that she is encouraged by Faustina the Younger, who sought his protection because he son Commodus is still young.
January 20
Commodus enters the College of Pontiffs.
July 7
Commodus assumes his toga virilis, a sign of adult male citizenship, on the Danubian front.
September
Marcus Aurelius and Commodus are initiated into the Eleusinian Mysteries.
November
Marcus Aurelius and Commodus return to Rome from their campaign against Cassius.
December 23
Marcus Aurelius and Commodus celebrate a joint triumph.
January 1
Commodus becomes consul for the first time.
February
Commodus assumes tribunician power.
Commodus marries Bruttia Crispina.
Marcus Aurelius and Commodus head to the Danubian front again.
192 CE
The Emperor Commodus choose to hold the Olympic Games in Antioch.
Commodus devalues the Roman currency, lowering the Denarius from 3.85 grams to 3.35 grams.
March 17
Death of Marcus Aurelius. Commodus becomes Emperor.
October 22
Commodus holds a triumph for himself after a Danubian campaign.
Lucilla and two men (reputed to be her lovers) attempt to kill her brother Commodus. The men are executed and Lucilla is exiled to Capri.
Lucilla is executed on Capri by a centurion sent by Commodus.
Commodus devalues the Roman currency further.
Crispina charged with adultery by Commodus and banished to Capri.
May
During a food shortage, the people of Rome demand the head of Cleander, the chamberlain of Commodus, who gave in and executed Cleander and his children.
Rome under Commodus is severely damaged by a fire.
Crispina is executed by Commodus.
Commodus appoints Septimius Severus governor of Pannonia Superior.
February
Commodus declares himself a new Romulus and re-founds Rome.
November
Commodus holds the Plebeian Games, where he shoots many animals and fights as a gladiator, of course winning every fight.
December 31
The mistress of Commodus, Marcia, discovers she is to be executed. She poisons him, but he vomits up the food. The wrestler Narcissus strangles Commodus in his bath.