List of Spanish monarchs

• Kings of Aragon and Counts of Barcelona
• Kings of Castile and of Leon
• Kings of Navarre

These lineages were eventually united by the marriage of Ferdinand II of Aragon and Isabella I of Castile. Although their kingdoms continued to be separate, with their personal union they ruled them together as one dominion. Ferdinand also conquered the southern half of Navarre and annexed it to Spain. Isabella left her kingdom to her daughter Joanna. Ferdinand served as her regent during her insanity; though rebuffed by the Castilian nobility and replaced with Joanna's husband Philip I of Castile, he resumed his regency after Philip's death. Joanna's son, the Holy Roman Emperor Charles V, succeeded her on the throne of Castile; and he also succeeded his grandfather Ferdinand on the Aragonese throne when Ferdinand died in 1516; thereafter the thrones were united.

Habsburg

(1516-1556) Charles I of Spain, a.k.a. Charles V, Holy Roman Emperor

(1556-1598) Philip II

(1598-1621) Philip III

(1621-1665) Philip IV

(1665-1700) Charles II

Bourbon

(1700-1724) Phillip V

(1724) Louis

(1724-1746) Philip V (restored)

(1746-1759) Ferndinand VI

(1759-1788) Charles III

(1788-1808) Charles IV

Bonaparte

(1808-1813) Joseph Bonaparte

Bourbon (restored)

(1813-1833) Ferdinand VII

(1833-1868) Isabella II

Savoy

(1871-1873) Amadeus I

Monarchy Abolished

(1873-1975) First Spanish Republic[?]

Bourbon (restored)

(1875-1885) Alfonso XII

(1886-1931) Alfonso XIII

Monarchy Abolished

(1931-1939) Second Spanish Republic

(1939-1976) Franco Regime declared to be a Kingdom in 1947

Bourbon (restored)

(1975-Present) Juan Carlos