| Millennium: | 1st millennium |
| Centuries: | 3rd century – 4th century – 5th century |
| Decades: | 290s 300s 310s – 320s – 330s 340s 350s |
| Years: | 320 321 322 323 324 325 326 327 328 329 |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
The 320s decade ran from January 1, 320, to December 31, 329.
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