| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 728 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 728 DCCXXVIII |
| Ab urbe condita | 1481 |
| Armenian calendar | 177 ԹՎ ՃՀԷ |
| Assyrian calendar | 5478 |
| Balinese saka calendar | 649–650 |
| Bengali calendar | 135 |
| Berber calendar | 1678 |
| Buddhist calendar | 1272 |
| Burmese calendar | 90 |
| Byzantine calendar | 6236–6237 |
| Chinese calendar | 丁卯年 (Fire Rabbit) 3425 or 3218 — to — 戊辰年 (Earth Dragon) 3426 or 3219 |
| Coptic calendar | 444–445 |
| Discordian calendar | 1894 |
| Ethiopian calendar | 720–721 |
| Hebrew calendar | 4488–4489 |
| Hindu calendars | |
| - Vikram Samvat | 784–785 |
| - Shaka Samvat | 649–650 |
| - Kali Yuga | 3828–3829 |
| Holocene calendar | 10728 |
| Iranian calendar | 106–107 |
| Islamic calendar | 109–110 |
| Japanese calendar | Jinki 5 (神亀５年) |
| Javanese calendar | 621–622 |
| Julian calendar | 728 DCCXXVIII |
| Korean calendar | 3061 |
| Minguo calendar | 1184 before ROC 民前1184年 |
| Nanakshahi calendar | −740 |
| Seleucid era | 1039/1040 AG |
| Thai solar calendar | 1270–1271 |
| Tibetan calendar | 阴火兔年 (female Fire-Rabbit) 854 or 473 or −299 — to — 阳土龙年 (male Earth-Dragon) 855 or 474 or −298 |
Year 728 (DCCXXVIII) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar, the 728th year of the Common Era (CE) and Anno Domini (AD) designations, the 728th year of the 1st millennium, the 28th year of the 8th century, and the 9th year of the 720s decade.The denomination 728 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.