| Date | Event |
|---|---|
| 1603 | Giulio Cesare Barbetta Died |
| June 1603 | Baldassare Donato Died |
| 1603 | Benedetto Ferrari Was Born |
| 1603 | Francesco Foggia Was Born |
| 1603 | Denis Gaultier Was Born |
| 1603 | Ellis Gibbons Died |
| 1603 | John IV of Portugal Was Born |
| 1603 | Caspar Kittel Was Born |
| 1603 | Philippe de Monte Died |
| 1603 | William Smith Was Born |
| March 24 1603 | Scotland's James VI Becomes King Of England, Ireland |
| March 24 1603 | Emperor Names Ieyasu Shogun In Edo |
| July 25 1603 | Scottish King James VI Accepts English Crown |
| November 17 1603 | Sir Walter Raleigh On Trial For Treason |