1238
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1238 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1238 in poetry | 
| Gregorian calendar | 1238 MCCXXXVIII | 
| Ab urbe condita | 1991 | 
| Armenian calendar | 687 ԹՎ ՈՁԷ | 
| Assyrian calendar | 5988 | 
| Balinese saka calendar | 1159–1160 | 
| Bengali calendar | 644–645 | 
| 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) 3935 or 3728 — to — 戊戌年 (Earth Dog) 3936 or 3729 | 
| 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 | 
| Tibetan calendar | 阴火鸡年 (female Fire-Rooster) 1364 or 983 or 211 — to — 阳土狗年 (male Earth-Dog) 1365 or 984 or 212 | 
Year 1238 (MCCXXXVIII) was a common year starting on Friday of the Julian calendar.