| Millennium: | 1st millennium |
| Centuries: | 7th century – 8th century – 9th century |
| Decades: | 690s 700s 710s – 720s – 730s 740s 750s |
| Years: | 720 721 722 723 724 725 726 727 728 729 |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
The 720s decade ran from January 1, 720 to December 31, 729.