| Duke of Porto | |
|---|---|
 | |
| Creation date | 1833 |
| Created by | Pedro IV |
| Peerage | Peerage of Portugal |
| First holder | Maria, Duchess of Porto |
| Remainder to | Second male child of the head of the Royal House of Portugal |
Duke of Porto (Portuguese Duque do Porto) is a title of Portuguese nobility, held by members of the royal family. It is named for the city of Porto, in the north of Portugal.
The title was created in 1833 for Maria, Princess Royal of Portugal by King Pedro IV of Portugal. The title's name was made in honour of the city of Porto, due its loyalty to Pedro IV and Maria II in the Liberal Wars.
Following the use of the title by Maria, Princess Royal of Portugal, the title became associated with the second male child of the head of the Royal House of Portugal.
| Image | Name | Lifespan | Tenure | Monarchical parent |
|---|---|---|---|---|
 | Infanta Maria da Glória, Duchess of Porto | 4 April 1819 – 15 November 1853 | 4 April 1833 – 31 October 1838 | Pedro IV of Portugal |
 | Infante Luís, Duke of Porto | 31 October 1838 – 19 October 1889 | 31 October 1838 - 31 July 1865 | Maria II of Portugal |
 | Infante Afonso, Duke of Porto | 31 July 1865 – 21 February 1920 | 31 July 1865 – 21 February 1920 | Luís I of Portugal |
After the end of the monarchy, the following individuals have claimed the title of Duke of Porto:
| Image | Name | Lifespan | Tenure | Monarchical parent |
|---|---|---|---|---|
| Infante Dinis, Duke of Porto | 25 November 1999 - Present | 25 November 1999 - Present | Duarte Pio |
Portuguese royalty | ||
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| Designated royal titles |  | |
| Undesignated royal titles | ||
| Royal households | ||
List of heirs to the Portuguese throne - Portuguese nobility | ||
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