Events in the year 1991 in Spain.

• Monarch – Juan Carlos I^[1]
• Prime Minister of Spain – Felipe González Márquez

• 26 May – 1991 Spanish local elections are held, to elect 66,308 councillors in the 8,060 municipalities of Spain and 1,032 seats in 38 provincial deputations.^[2][3]

• Spain, represented by Sergio Dalma, finishes 4th in the Eurovision Song Contest with 119 points.^[4]

• See List of Spanish films of 1991

• The comedy series, Farmacia de guardia, is launched.

• El caballero de Sajonia by Juan Benet Goitia

• 9 January – Álvaro Soler, singer
• 21 January – Javier Calvo, actor and director
• 6 February – Maxi Iglesias, actor and model
• 11 April – Thiago Alcântara, footballer
• 15 April – Javier Fernandez, figure skater
• 10 June – Pol Espargaró, motorcycle racer
• 1 July – Lucas Vázquez, footballer
• 24 September – Oriol Romeu, footballer
• 13 October – Diego Domínguez, Spanish actor and singer

• 5 February – Pedro Arrupe, priest (born 1907)
• 6 February – María Zambrano, essayist and philosopher (born 1904)
• 4 May — Luis Rodríguez Zúñiga, Spanish sociologist (born 1942)