| Centuries: | 2nd century - 3rd century - 4th century |
| Decades: | 200s 210s 220s - 230s - 240s 250s 260s |
| Years: | 235 236 237 - 238 - 239 240 241 |
| 238 by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishment and disestablishment categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 238 CCXXXVIII |
| Ab urbe condita | 991 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1606 – -1605 |
| Berber calendar | 1188 |
| Buddhist calendar | 782 |
| Burmese calendar | -400 |
| Chinese calendar | 2874/2934-12-28 (丁巳年十二月廿八日) — to —
2875/2935-12-8(戊午年十二月初八日) |
| Coptic calendar | -46 – -45 |
| Ethiopian calendar | 230 – 231 |
| Hebrew calendar | 3998 – 3999 |
| Hindu calendars | |
| - Vikram Samvat | 293 – 294 |
| - Shaka Samvat | 160 – 161 |
| - Kali Yuga | 3339 – 3340 |
| Holocene calendar | 10238 |
| Iranian calendar | 384 BP – 383 BP |
| Islamic calendar | 396 BH – 395 BH |
| Japanese calendar | |
| Korean calendar | 2571 |
| Thai solar calendar | 781 |