Spain is nowadays a monarchy, i.e. a kingdom (form of government), with a king as its head of state.

This category includes all the claimants to the Spanish throne, as rival claimants to the ruling monarch, i.c. king, and claimants to historical thrones, who were all incorporated into modern Spain.

• claimants of the throne of the actual kingdom of Spain upon the death of king Charles II of Spain (from 1700 until today)
  • by the House of Habsburg: order of succession by male primogeniture or semi-salic law from Leopold I, Holy Roman Emperor onwards (from 1700 until today)
  • by the House of Bourbon: order of succession by salic law from Philip V of Spain onwards (from 1700 until 1808)
    • by the House of Bonaparte (from 1808 until 1813)
    • by the House of Bourbon-Parma (from 1808 until 1833)
      • order of succession by male primogeniture or semi-salic law from Isabella of Bourbon-Parma-Two Sicilies onwards (Royalism) (from 1833 until today)
      • order of succession by salic law from Carlos of Bourbon-Parma onwards (Carlism) (from 1833 until today)
  • by the House of Wittelsbach: Joseph Ferdinand of Bavaria (heir presumptive from 1692 until 1699)

• claimants of historical thrones on Spanish territory:
  • pretenders to the throne of the historical kingdom of Aragon
  • pretenders to the throne of the historical kingdom of Castille
  • pretenders to the throne of the historical kingdom of Leon
  • pretenders to the throne of the historical kingdom of Navarre