|Centuries:||1st century BC – 1st century – 2nd century|
|Decades:||10s 20s 30s – 40s – 50s 60s 70s|
|Years:||42 43 44 – 45 – 46 47 48|
|45 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||798|
|Bahá'í calendar||−1799 – −1798|
|English Regnal year||N/A|
|Chinese calendar||甲辰年 (Wood Dragon)
2741 or 2681
— to —
乙巳年 (Wood Snake)
2742 or 2682
|Coptic calendar||−239 – −238|
|- Vikram Samvat||101–102|
|- Shaka Samvat||N/A|
|- Kali Yuga||3146–3147|
|Igbo calendar||−955 – −954|
|Iranian calendar||577 BP – 576 BP|
|Islamic calendar||595 BH – 594 BH|
|Minguo calendar||1867 before ROC
|Thai solar calendar||588|
|Wikimedia Commons has media related to 45.|
Year 45 (XLV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Vinicius and Sabinus (or, less frequently, year 798 Ab urbe condita). The denomination 45 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.
- Marcus Vinicius and Titus Flavius Sabinus become Roman consuls.
- Galba becomes the commander of Legio III Augusta.
- Salzburg (Juvavum) is awarded the status of a Roman municipium.
- The emperor Claudius expels the Jews from Rome.
- Emperor Claudius founds Savaria, today the Hungarian city of Szombathely.
- The Senate holds consultations regarding real estate speculation in Rome.
- The wealthy freedman C. Lusius Storax dies.
- Statius, Latin poet (approximate date) (d. c. 96 AD)
- Plutarch, Greek historian/biographer (approximate date) (d. 120)