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|193 by topic|
|Ab urbe condita||946|
|Balinese saka calendar||114–115|
|Chinese calendar||壬申年 (Water Monkey)|
2889 or 2829
— to —
癸酉年 (Water Rooster)
2890 or 2830
|Coptic calendar||−91 – −90|
|- Vikram Samvat||249–250|
|- Shaka Samvat||114–115|
|- Kali Yuga||3293–3294|
|Iranian calendar||429 BP – 428 BP|
|Islamic calendar||442 BH – 441 BH|
|Minguo calendar||1719 before ROC|
|Seleucid era||504/505 AG|
|Thai solar calendar||735–736|
319 or −62 or −834
— to —
320 or −61 or −833
Year 193 (CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 Ab urbe condita). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard.
- March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off, Marcus Didius Julianus the highest bidder, offers 300 million sesterces for the throne. The Roman governors Clodius Albinus (Britannia) and Pescennius Niger (Syria) claim with support of their troops the imperial throne.
- April 14 – Lucius Septimius Severus is proclaimed Emperor by his troops at Carnuntum in Pannonia Superior (Balkans). He marches with his army to Rome.
- June 1 – Septimius Severus enters the capital and has Julianus put to death. He replaces the Praetorian Guard with a 15,000-man force from the Danubian legions and gains control of the Roman Empire, beginning the Severan dynasty.
- Septimius Severus defeats the army under Pescennius at the Battle of Cyzicus and Battle of Nicaea (Asia Minor).
- In Britain, Clodius Albinus allies with Septimius Severus and accepts the title of Caesar. British tribes take advantage of the disorder in the Empire and damage Hadrian's Wall. Extensive repairs to the defence work is carried out by the legionaries.
- Counterfeiting workshops begin to appear throughout the Roman Empire.
- Last (4th) year of Chuping era of the Chinese Han dynasty.
- Cao Cao's invasion of Xu Province: Cao Cao invades Tao Qian's Xu Province, holding him responsible for the death of Cao Song.
- The silver content of the Roman denarius falls to 50 percent under emperor Septimius Severus, down from 68 percent under Marcus Aurelius.
- March 28 – Pertinax, Roman emperor (assassinated) (b. 126)
- June 1 – Didius Julianus, Roman emperor (assassinated) (b. 133 or 137)
- Cao Song, Han dynasty official and father of the warlord Cao Cao
- Liu Yu, Han dynasty noble and official