1538
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1538 by topic | 
|---|
| Arts and science | 
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Works category | 
| 
 | 
| Gregorian calendar | 1538 MDXXXVIII | 
| Ab urbe condita | 2291 | 
| Armenian calendar | 987 ԹՎ ՋՁԷ | 
| Assyrian calendar | 6288 | 
| Balinese saka calendar | 1459–1460 | 
| Bengali calendar | 944–945 | 
| Berber calendar | 2488 | 
| English Regnal year | 29 Hen. 8 – 30 Hen. 8 | 
| Buddhist calendar | 2082 | 
| Burmese calendar | 900 | 
| Byzantine calendar | 7046–7047 | 
| Chinese calendar | 丁酉年 (Fire Rooster) 4235 or 4028 — to — 戊戌年 (Earth Dog) 4236 or 4029 | 
| Coptic calendar | 1254–1255 | 
| Discordian calendar | 2704 | 
| Ethiopian calendar | 1530–1531 | 
| Hebrew calendar | 5298–5299 | 
| Hindu calendars | |
| - Vikram Samvat | 1594–1595 | 
| - Shaka Samvat | 1459–1460 | 
| - Kali Yuga | 4638–4639 | 
| Holocene calendar | 11538 | 
| Igbo calendar | 538–539 | 
| Iranian calendar | 916–917 | 
| Islamic calendar | 944–945 | 
| Japanese calendar | Tenbun 7 (天文7年) | 
| Javanese calendar | 1456–1457 | 
| Julian calendar | 1538 MDXXXVIII | 
| Korean calendar | 3871 | 
| Minguo calendar | 374 before ROC 民前374年 | 
| Nanakshahi calendar | 70 | 
| Thai solar calendar | 2080–2081 | 
| Tibetan calendar | 阴火鸡年 (female Fire-Rooster) 1664 or 1283 or 511 — to — 阳土狗年 (male Earth-Dog) 1665 or 1284 or 512 | 
Year 1538 (MDXXXVIII) was a common year starting on Tuesday of the Julian calendar.