| Millennium: | 1st millennium BC |
| Centuries: | 5th century BC – 4th century BC – 3rd century BC |
| Decades: | 340s BC 330s BC 320s BC – 310s BC – 300s BC 290s BC 280s BC |
| Years: | 319 BC 318 BC 317 BC 316 BC 315 BC 314 BC 313 BC 312 BC 311 BC 310 BC |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
312 BC — First aqueduct began to be built.