San Fernando (Spanish pronunciation: [ˈsaɱ feɾˈnando], "Saint Ferdinand") is a town in the province of Cádiz, Spain. It is home to more than 97,500 inhabitants. The city also uses the name "La Isla" (The Island). The people from San Fernando are locally known as "Cañaíllas" or "Isleños".

In history, the city played a paramount role when in 1810 during the Peninsular War led by Napoleon, San Fernando and Cádiz were the only parts of Spain which were never occupied by the French, until the French withdrawal in defeat from Spain in 1814.

The deputies elected to the Cortes of Cádiz met in the Teatro Cómico, and started preparation of the first liberal constitution of Spain, which was approved in the neighbouring city of Cádiz in 1812.

Flamenco singer Camarón de la Isla was born in San Fernando.

It holds the Panteón de Marinos Ilustres.

• Julia Medina, singer
• Quintin Dobarganes, Journalist
• Magdalena Álvarez, Politician, former minister of Mr. Zapatero team
• Sara Baras, Flamenco Dancer
• Luis Berenguer, Writer
• Manolo Casal, Canal Sur TV Presenter
• Juan Ruiz Casaux, Cellist and Teacher
• Beato Marcelo Espínola, Bishop, proposed to be a Saint
• Hermana Cristina, Sister, Bishop, proposed to be a Saint
• Camarón de la Isla, Flamenco singer
• Chato de la Isla, Flamenco singer
• Fermín Galán (1899–1930), Spanish soldier who led the failed Jaca uprising a few months before the foundation of the Second Spanish Republic.
• Carmen Guaita, writer
• Anne Hidalgo, incumbent Mayor of Paris
• Francisco José Maldonado, footballer currently with Sporting de Gijón
• Abraham Mateo, Singer and Actor
• Tony Mateo, Singer and Actor
• Fran Ocaña, Singer
• Alex O'Dogherty, Actor
• Pepe Oneto, Journalist
• Rafael Gómez Ortega, Bullfighter
• Niña Pastori, Flamenco singer
• Ana Rosetti, Writer
• Francisco Ruiz Miguel, Bullfighter
• Yordi, retired footballer
• Servando Sánchez, footballer
• David Barral Torres, footballer
• Abraham Mateo, pop singer
• Ramón Rodriguez Verdejo "Monchi", Director of Football of Sevilla F.C.SAD
• José Enrique Varela (1891–1951), military officer

• Montigny-le-Bretonneux,  France
• Badalona,  Spain
• Guanajuato,  Mexico
• San Fernando Valley,  United States

Historical population

Year	Pop.	±%
2016	95,949	—
2017	95,643	−0.3%
2018	95,174	−0.5%
2019	94,979	−0.2%
2020	95,001	+0.0%
2021	94,867	−0.1%
2022	94,120	−0.8%
2023	93,927	−0.2%
Source: INE (Spain)

• Iglesia Vaticana Castrense de San Francisco
• Plaza de los hornos púnicos y fenicios
• Puente Marqués de Ureña
• San Fernando Naval Museum

• Cadiz Province – San Fernando
• (in Spanish) Ayuntamiento de San Fernando
• (in Spanish) San Fernando Travel Guide Archived 6 March 2021 at the Wayback Machine