|Millennium:||1st millennium BC|
|Centuries:||2nd century BC – 1st century BC – 1st century|
|Decades:||90s BC 80s BC 70s BC – 60s BC – 50s BC 40s BC 30s BC|
|Years:||64 BC 63 BC 62 BC – 61 BC – 60 BC 59 BC 58 BC|
|61 BC by topic|
|Gregorian calendar||61 BC|
|Ab urbe condita||693|
|Bahá'í calendar||−1904 – −1903|
|English Regnal year||N/A|
|Chinese calendar||己未年 (Earth Goat)
2636 or 2576
— to —
庚申年 (Metal Monkey)
2637 or 2577
|Coptic calendar||−344 – −343|
|Ethiopian calendar||−68 – −67|
|- Vikram Samvat||−4 – −3|
|- Shaka Samvat||N/A|
|- Kali Yuga||3041–3042|
|Igbo calendar||−1060 – −1059|
|Iranian calendar||682 BP – 681 BP|
|Islamic calendar||703 BH – 702 BH|
|Minguo calendar||1972 before ROC
|Thai solar calendar||483|
|Wikimedia Commons has media related to 61 BC.|
Year 61 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Calpurnianus and Messalla (or, less frequently, year 693 Ab urbe condita). The denomination 61 BC 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.
- September 29 – Pompey, the Great celebrates his third triumph for victories over the pirates and the end of the Mithridatic Wars.
- Marcus Pupius Piso Frugi as consul attempts to gain ratification of Pompey's Eastern Settlement.
- Gaius Julius Caesar becomes governor in Hispania and creates Legio X Gemina (3,500 men). He puts down the Callaici and Lusitani rebellions.