| Ferdinand II | |
|---|---|
 King Ferdinand in 1861 | |
| King of Portugal | |
| Reign | 16 September 1837 – 15 November 1853 |
| Predecessor | Maria II |
| Successor | Pedro V |
| Co-monarch | Maria II |
| Prince consort of Portugal | |
| Tenure | 9 April 1836 – 16 September 1837 |
| Born | Prinz Ferdinand von Sachsen-Coburg-Saalfeld 29 October 1816 Palais Coburg, Vienna, Austrian Empire |
| Died | 15 December 1885 (aged 69) Necessidades Palace, Lisbon, Portugal |
| Burial | 21 December 1885 Pantheon of the House of Braganza, Lisbon, Portugal |
| Spouses | |
| Issue Detail | Pedro V, King of Portugal Luís I, King of Portugal Infante João, Duke of Beja Maria Ana, Princess Georg of Saxony Antónia, Princess of Hohenzollern Infante Fernando Infante Augusto, Duke of Coimbra |
| House | Saxe-Coburg and Gotha-Koháry |
| Father | Ferdinand, Prince of Saxe-Coburg and Gotha-Koháry |
| Mother | Princess Maria Antonia Koháry de Csábrág et Szitnya |
| Religion | Roman Catholicism |
| Signature |  |
Dom Ferdinand II (Portuguese: Fernando II) (29 October 1816 – 15 December 1885) was a German prince of the House of Saxe-Coburg and Gotha-Koháry, and King of Portugal jure uxoris as the husband of Queen Maria II, from the birth of their first son in 1837 to her death in 1853.
In keeping with Portuguese law, only after the birth of his son in 1837 did he acquire the title of king. Ferdinand's reign came to an end with the death of his wife in 1853, but he served as regent for his son and successor, King Pedro V, until 1855.
He retained the style and title of king even after the death of Maria II and her succession by their children Pedro V and then Luís I. His sons were reigning kings, while Ferdinand himself was a king-father during their reigns.