| Millennium: | 1st millennium |
| Centuries: | 2nd century – 3rd century – 4th century |
| Decades: | 210s 220s 230s – 240s – 250s 260s 270s |
| Years: | 240 241 242 243 244 245 246 247 248 249 |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
The 240s decade ran from January 1, 240, to December 31, 249.
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