| Millennium: | 2nd Millennium |
|---|---|
| Centuries: | 12th cent. – 13th cent. – 14th cent. |
| Decades: | 1200s 1210s 1220s – 1230s – 1240s 1250s 1260s |
| Years: | 1235 1236 1237 – 1238 – 1239 1240 1241 |
| Gregorian calendar | 1238 MCCXXXVIII |
| Ab urbe condita | 1991 |
| Armenian calendar | 687 ԹՎ ՈՁԷ |
| Assyrian calendar | 5988 |
| Bengali calendar | 645 |
| Berber calendar | 2188 |
| English Regnal year | 22 Hen. 3 – 23 Hen. 3 |
| Buddhist calendar | 1782 |
| Burmese calendar | 600 |
| Byzantine calendar | 6746–6747 |
| Chinese calendar | 丁酉年 (Fire Rooster) 3934 or 3874 — to — 戊戌年 (Earth Dog) 3935 or 3875 |
| Coptic calendar | 954–955 |
| Discordian calendar | 2404 |
| Ethiopian calendar | 1230–1231 |
| Hebrew calendar | 4998–4999 |
| Hindu calendars | |
| - Vikram Samvat | 1294–1295 |
| - Shaka Samvat | 1159–1160 |
| - Kali Yuga | 4338–4339 |
| Holocene calendar | 11238 |
| Igbo calendar | 238–239 |
| Iranian calendar | 616–617 |
| Islamic calendar | 635–636 |
| Japanese calendar | Katei 4 / Ryakunin 1 (暦仁元年) |
| Javanese calendar | 1147–1148 |
| Julian calendar | 1238 MCCXXXVIII |
| Korean calendar | 3571 |
| Minguo calendar | 674 before ROC 民前674年 |
| Nanakshahi calendar | −230 |
| Thai solar calendar | 1780–1781 |
The year 1238 BC