List of Spanish sail frigates
This is a list of Spanish sail frigates built or acquired during the period 1700–1854.
Spanish frigates generally had religious names, often the names of saints or "our Lady". Those with primarily secular names usually had additionally a religious name, which is listed below in the second column where known.
An asterisk in the "Launch date" column indicates the date of acquisition for vessels not built for the Spanish Navy.
Habsburg era – pre-1700
During the 17th century, and for much of the first half of the 18th century, the term 'frigate' encompassed ships with two complete gundecks rated at about 50 guns as well as smaller single-decked vessels. The smaller frigates evolved from the fast and lightly armed vessels built chiefly on the coast of Flanders, and employed in the English Channel and southern North Sea, as well as escorting the trade routes from the Spanish Netherlands to the north coast of Spain.Final phase – from 1815 to 1854
The post-Napoleonic era began with the acquisition of six frigates from Russia in 1818. These proved of poor quality and were soon disposed of.| Name | Built at | Launch date | No of Guns | Fate/notes |
| Astrolabio | St Petersburg | 17 September 1811 | 44 | ex-Russian Avtroil, acquired 21 February 1818 |
| Mercurio | St Petersburg | 13 July 1815 | 44 | ex-Russian Merkurii, acquired 21 February 1818 |
| Patricio | Arkangelsk | 21 June 1816 | 44 | ex-Russian Patrikii, acquired 21 February 1818; renamed María Isabel soon after acquisition. Captured by Chileans 20 September 1819. |
| Ligera | St Petersburg | 16 August 1816 | 44 | ex-Russian Legkii, acquired 12 October 1818 |
| Viva | Arkangelsk | 26 May 1816 | 40 | ex-Russian Provornyi, acquired 12 October 1818 |
| Pronta | St Petersburg | 16 August 1816 | 40 | ex-Russian Pospeshnyi, acquired 12 October 1818 |
| Aretusa | Bordeaux | 29 April 1819 | 40 | Stricken 1829 |
| Iberia | Ferrol | 3 March 1825 | 50 | Stricken in December 1830 |
| Lealtad | Ferrol | 19 March 1825 | 50 | Wrecked 13 January 1834 at Santander |
| Restauración | Ferrol | 14 October 1826 | 50 | Renamed Ville de Bilbao in 1837; hulked in 1840 |
| Esperanza | Cavite | 29 November 1834 | 48 | |
| Cortes | Ferrol | 27 July 1836 | 44 | Stricken 21 March 1863 |
| Isabel II | Ferrol | 23 September 1836 | 44 | Hulked in May 1860 |
| Reina María Cristina | Ferrol | 6 February 1837 | 52 | Stricken 25 October 1852 |
| Bailén | Ferrol | 29 March 1854 | 40 | Stricken 21 August 1865 |