|Millennium:||1st millennium BC|
|Centuries:||3rd century BC – 2nd century BC – 1st century BC|
|Decades:||170s BC 160s BC 150s BC – 140s BC – 130s BC 120s BC 110s BC|
|Years:||151 BC 150 BC 149 BC – 148 BC – 147 BC 146 BC 145 BC|
|148 BC by topic|
|Gregorian calendar||148 BC|
|Ab urbe condita||606|
|Bahá'í calendar||−1991 – −1990|
|English Regnal year||N/A|
|Chinese calendar||壬辰年 (Water Dragon)
2549 or 2489
— to —
癸巳年 (Water Snake)
2550 or 2490
|Coptic calendar||−431 – −430|
|Ethiopian calendar||−155 – −154|
|- Vikram Samvat||−91 – −90|
|- Shaka Samvat||N/A|
|- Kali Yuga||2954–2955|
|Igbo calendar||−1147 – −1146|
|Iranian calendar||769 BP – 768 BP|
|Islamic calendar||793 BH – 792 BH|
|Minguo calendar||2059 before ROC
|Thai solar calendar||396|
|Wikimedia Commons has media related to 148 BC.|
Year 148 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Magnus and Caesoninus (or, less frequently, year 606 Ab urbe condita). The denomination 148 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.
- With the defeat of Andriscus in the Battle of Pydna by Quintus Caecilius Metellus Macedonicus, Macedon is reorganized as a Roman province by 146 BC.
- Construction of the Via Postumia, linking Aquileia and Genua.
- Publius Cornelius Scipio Aemilianus divides Numidia among the three sons of the recently deceased Masinissa.