|Millennium:||1st millennium BC|
|147 BC by topic|
|Gregorian calendar||147 BC|
|Ab urbe condita||607|
|Ancient Egypt era||XXXIII dynasty, 177|
|- Pharaoh||Ptolemy VI Philometor, 34|
|Ancient Greek era||158th Olympiad, year 2|
|Balinese saka calendar||N/A|
|Chinese calendar||癸巳年 (Water Snake)|
2550 or 2490
— to —
甲午年 (Wood Horse)
2551 or 2491
|Coptic calendar||−430 – −429|
|Ethiopian calendar||−154 – −153|
|- Vikram Samvat||−90 – −89|
|- Shaka Samvat||N/A|
|- Kali Yuga||2954–2955|
|Iranian calendar||768 BP – 767 BP|
|Islamic calendar||792 BH – 791 BH|
|Minguo calendar||2058 before ROC|
|Seleucid era||165/166 AG|
|Thai solar calendar||396–397|
−20 or −401 or −1173
— to —
−19 or −400 or −1172
Year 147 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Aemilianus and Drusus (or, less frequently, year 607 Ab urbe condita). The denomination 147 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.
- Corlea Trackway completed.
- Scipio Aemilianus takes command in the Battle of Carthage. He built a mole across the gulf into the harbour, the Carthaginians dug a canal from their inner harbour basin to the coast and put to sea with a full fleet, but they are defeated in a naval engagement.
- Carthage recalled from exile an able general, named Hasdrubal, who organized their solid defences. Against the 45-foot (13.7 m) city walls, the Romans made slow progress.
- In Lusitania, Hispania, the Celtic king Viriathus, rallies Lusitanian resistance to Rome.
- Lokaksema, a Buddhist monk from Gandhara (modern Pakistan/Afghanistan), Yuezhi in ethnicity, the first to translate Mahayana scriptures into the Chinese language during the Han Dynasty