|Centuries:||1st century – 2nd century – 3rd century|
|Decades:||80s 90s 100s – 110s – 120s 130s 140s|
|Years:||114 115 116 – 117 – 118 119 120|
|117 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||870|
|English Regnal year||N/A|
— to —丁巳年十一月二十日
|- Vikram Samvat||173–174|
|- Shaka Samvat||39–40|
|- Kali Yuga||3218–3219|
|- Ǹrí Ìgbò||-883–-882|
|Iranian calendar||505 BP – 504 BP|
|Islamic calendar||521 BH – 520 BH|
|Juche calendar||N/A (before 1912)|
|Julian calendar||117 CXVII|
|Minguo calendar||1795 before ROC
|Thai solar calendar||660|
|Wikimedia Commons has media related to: 117|
Year 117 (CXVII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Niger and Apronianus (or, less frequently, year 870 Ab urbe condita). The denomination 117 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.
By place 
Roman Empire 
- Trajan subdues a Jewish revolt (the Kitos War), then falls seriously ill, leaving Hadrian in command of the east.
- On his death bed, Trajan adopts Hadrian and designates him as his successor.
- August 9 – Emperor Trajan dies of a stroke at Selinus in Cilicia, age 63, while en route from Mesopotamia to Italy. Leaving the Roman Empire at its maximal territorial extent.
- Hadrian, who will reign until 138, succeeds him.
- citation needed] giving up the policy of conquest of his predecessor in order to consolidate the empire. [
- Hadrian returns large parts of Mesopotamia to the Parthians as part of a peace settlement.
- Construction begins on the Pantheon in Rome.
By topic 
- The silver content of the Roman denarius falls to 87 percent under emperor Hadrian, down from 93 percent in the reign of Trajan.
- Hermione of Ephesus, Maurus, Pantalemon and Sergius, Astius and several other Christian martyrs in persecution by Trajan
- August 9 – Trajan, Roman emperor (b. 53)
- Gaius Cornelius Tacitus, Roman historian (b. 56)
- Gaius Julius Quadratus Bassus, Roman general in Judea (b. 70)