| Years: 721 722 723 724 - 725 - 726 727 728 729 | |
| Decades: 690s 700s 710s - 720s - 730s 740s 750s | |
| Centuries: 7th century - 8th century - 9th century | |
Events
- Bede publishes On the reckoning of time (De ratione temporum) calculating dates from the birth of Christ. The AD system is subsequently disseminated throughout western Europe.
| Gregorian calendar | 725 DCCXXV |
| Ab urbe condita | 1478 |
| Armenian calendar | 174 ԹՎ ՃՀԴ |
| Assyrian calendar | 5475 |
| Balinese saka calendar | 646–647 |
| Bengali calendar | 132 |
| Berber calendar | 1675 |
| Buddhist calendar | 1269 |
| Burmese calendar | 87 |
| Byzantine calendar | 6233–6234 |
| Chinese calendar | 甲子年 (Wood Rat) 3422 or 3215 — to — 乙丑年 (Wood Ox) 3423 or 3216 |
| Coptic calendar | 441–442 |
| Discordian calendar | 1891 |
| Ethiopian calendar | 717–718 |
| Hebrew calendar | 4485–4486 |
| Hindu calendars | |
| - Vikram Samvat | 781–782 |
| - Shaka Samvat | 646–647 |
| - Kali Yuga | 3825–3826 |
| Holocene calendar | 10725 |
| Iranian calendar | 103–104 |
| Islamic calendar | 106–107 |
| Japanese calendar | Jinki 2 (神亀２年) |
| Javanese calendar | 618–619 |
| Julian calendar | 725 DCCXXV |
| Korean calendar | 3058 |
| Minguo calendar | 1187 before ROC 民前1187年 |
| Nanakshahi calendar | −743 |
| Seleucid era | 1036/1037 AG |
| Thai solar calendar | 1267–1268 |
| Tibetan calendar | 阳木鼠年 (male Wood-Rat) 851 or 470 or −302 — to — 阴木牛年 (female Wood-Ox) 852 or 471 or −301 |
Births
Deaths