Events in 1603

8 notable events from 1603.

• Sangley Rebellion (1603)
  Oct 3, 1603–Oct 1603 · Philippines
• Battle of Glen Fruin
  Feb 7, 1603 · United Kingdom
• Bye Plot
  1603 · —
• Battle of Puerto Caballos (1603)
  Feb 17, 1603 · Honduras
• Takiyama Ikki
  Nov 1603 · Japan
• Rokugō rebellion
  Nov 1603 · Japan
• Mutiny of Hoogstraten
  Aug 10, 1603 · Belgium
• Revolt of the False Abd al-Ghaffar
  Jan 1, 1603–Jan 1, 1605 · Tajikistan