|Millennium:||1st millennium BC|
|Centuries:||6th century BC – 5th century BC – 4th century BC|
|Decades:||520s BC 510s BC 500s BC – 490s BC – 480s BC 470s BC 460s BC|
|Years:||500 BC 499 BC 498 BC – 497 BC – 496 BC 495 BC 494 BC|
|497 BC by topic|
|Gregorian calendar||497 BC|
|Ab urbe condita||257|
|Bahá'í calendar||−2340 – −2339|
|English Regnal year||N/A|
|Chinese calendar||癸卯年 (Water Rabbit)
2200 or 2140
— to —
甲辰年 (Wood Dragon)
2201 or 2141
|Coptic calendar||−780 – −779|
|Ethiopian calendar||−504 – −503|
|- Vikram Samvat||−440 – −439|
|- Shaka Samvat||N/A|
|- Kali Yuga||2605–2606|
|Igbo calendar||−1496 – −1495|
|Iranian calendar||1118 BP – 1117 BP|
|Islamic calendar||1152 BH – 1151 BH|
|Minguo calendar||2408 before ROC
|Thai solar calendar||47|
|Wikimedia Commons has media related to 497 BC.|
Year 497 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Atratinus and Augurinus (or, less frequently, year 257 Ab urbe condita). The denomination 497 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.
- Artybius ends the rebellion in Cyprus.
- The Persians launch an expedition on the Hellespont and later Caria.
- December 17 – Consecration of the newly constructed Temple of Saturn in the Roman forum, and Saturnalia festival first celebrated.