Decades: 330s BC 320s BC 310s BC 300s BC 290s BC - **280s BC** - 270s BC 260s BC 250s BC 240s BC 230s BC

286 BC 285 BC 284 BC 283 BC 282 BC **281 BC** 280 BC 279 BC 278 BC 277 BC 276 BC

- Battle of Corupedium: The forces of King Seleucus I Nicator of the Seleucid dynasty defeat and kill king Lysimachus of Thrace and Macedon.
- Seleucus I Nicator is assassinated by his enemy Ptolemy Ceraunus.
- Antiochus I Soter becomes King of the Seleucid dynasty.

- King Lysimachus of Thrace and Macedon.
- Seleucus I Nicator, King of the Seleucid dynasty.