| Centuries: | 3rd century · 4th century · 5th century |
| Decades: | 290s 300s 310s 320s 330s 340s 350s |
| Years: | 325 326 327 328 329 330 331 |
| 328 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 328 CCCXXVIII |
| Ab urbe condita | 1081 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1516 – -1515 |
| Bengali calendar | -265 |
| Berber calendar | 1278 |
| Buddhist calendar | 872 |
| Burmese calendar | -310 |
| Byzantine calendar | 5836 – 5837 |
| Chinese calendar | 丁亥年十二月初三日 (2964/3024-12-3) — to —
戊子年十一月十四日(2965/3025-11-14) |
| Coptic calendar | 44 – 45 |
| Ethiopian calendar | 320 – 321 |
| Hebrew calendar | 4088 – 4089 |
| Hindu calendars | |
| - Bikram Samwat | 384 – 385 |
| - Shaka Samvat | 250 – 251 |
| - Kali Yuga | 3429 – 3430 |
| Holocene calendar | 10328 |
| Iranian calendar | 294 BP – 293 BP |
| Islamic calendar | 303 BH – 302 BH |
| Japanese calendar | |
| Korean calendar | 2661 |
| Thai solar calendar | 871 |