| Millennium: | 2nd millennium |
| Centuries: | 12th century – 13th century – 14th century |
| Decades: | 1200s 1210s 1220s – 1230s – 1240s 1250s 1260s |
| Years: | 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
The 1230s decade ran from January 1, 1230, to December 31, 1239.