| King of Portugal and the Algarves (1139–1910) | |
|---|---|
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 Manuel II, last King of Portugal | |
.jpg) Duke of Bragança, pretender to the dormant throne | |
| Details | |
| Style | His Most Faithful Majesty |
| First monarch | Afonso I |
| Last monarch | Manuel II |
| Formation | 25 July 1139 |
| Abolition | 5 October 1910 |
| Residence | Royal residences in Portugal |
| Pretender(s) | Duarte Pio, Duke of Braganza |
This is a list of Portuguese monarchs who ruled from the establishment of the Kingdom of Portugal, in 1139, to the deposition of the Portuguese monarchy and creation of the Portuguese Republic with the 5 October 1910 revolution.
Through the nearly 800 years in which Portugal was a monarchy, the kings held various other titles and pretensions. Two kings of Portugal, Ferdinand I and Afonso V, claimed the crown of Castile and waged wars in order to enforce their respective claims. Ferdinand I managed to be recognized as King of Galiza in 1369, although his dominance of the region was short-lived. When the House of Habsburg came into power, the kings of Spain, Naples, and Sicily also became kings of Portugal. The House of Braganza brought numerous titles to the Portuguese Crown some honorary, such as the attribution of the title of Rex Fidelissimus (His Most Faithful Majesty), and royal titles, such as King of Brazil and then de jure Emperor of Brazil.
After the demise of the Portuguese monarchy, in 1910, Portugal almost restored its monarchy in a revolution known as the Monarchy of the North, though the attempted restoration only lasted a month before destruction. With Manuel II's death, the Miguelist branch of the house of Braganza became the pretenders to the throne of Portugal. They have all been acclaimed king of Portugal by their monarchist groups.
The monarchs of Portugal all came from a single ancestor, Afonso I of Portugal, but direct lines have sometimes ended. This has led to a variety of royal houses coming to rule Portugal, though all having Portuguese royal lineage. These houses are:
- House of Burgundy (1139–1383)
- House of Aviz (1385–1580)
- House of Habsburg (1581–1640)
- House of Braganza (1640–1910)