577 BC
| Years | 
|---|
| Millennium | 
| 1st millennium BC | 
| Centuries | 
| Decades | 
| Years | 
| 577 BC by topic | 
| Politics | 
|---|
| Categories | 
| Gregorian calendar | 577 BC DLXXVII BC | 
| Ab urbe condita | 177 | 
| Ancient Egypt era | XXVI dynasty, 88 | 
| - Pharaoh | Apries, 13 | 
| Ancient Greek Olympiad (summer) | 50th Olympiad, year 4 | 
| Assyrian calendar | 4174 | 
| Balinese saka calendar | N/A | 
| Bengali calendar | −1170 – −1169 | 
| Berber calendar | 374 | 
| Buddhist calendar | −32 | 
| Burmese calendar | −1214 | 
| Byzantine calendar | 4932–4933 | 
| Chinese calendar | 癸未年 (Water Goat) 2121 or 1914 — to — 甲申年 (Wood Monkey) 2122 or 1915 | 
| Coptic calendar | −860 – −859 | 
| Discordian calendar | 590 | 
| Ethiopian calendar | −584 – −583 | 
| Hebrew calendar | 3184–3185 | 
| Hindu calendars | |
| - Vikram Samvat | −520 – −519 | 
| - Shaka Samvat | N/A | 
| - Kali Yuga | 2524–2525 | 
| Holocene calendar | 9424 | 
| Iranian calendar | 1198 BP – 1197 BP | 
| Islamic calendar | 1235 BH – 1234 BH | 
| Javanese calendar | N/A | 
| Julian calendar | N/A | 
| Korean calendar | 1757 | 
| Minguo calendar | 2488 before ROC 民前2488年 | 
| Nanakshahi calendar | −2044 | 
| Thai solar calendar | −34 – −33 | 
| Tibetan calendar | 阴水羊年 (female Water-Goat) −450 or −831 or −1603 — to — 阳木猴年 (male Wood-Monkey) −449 or −830 or −1602 | 
The year 577 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 177 Ab urbe condita . The denomination 577 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.