723
| Years: 719 720 721 722 - 723 - 724 725 726 727 | |
| Decades: 690s 700s 710s - 720s - 730s 740s 750s | |
| Centuries: 7th century - 8th century - 9th century | |
Events
- The world's first mechanical clock is allegedly built in China. See celestial globe.
Deaths