Guernica, official and Basque name Gernika, is a town in the province of Biscay, in the Autonomous Community of the Basque Country, Spain. The town of Guernica is united in one municipality with neighbouring Lumo, as Gernika-Lumo. The population of the municipality is 16,224 as of 2009.

Gernika is best known to those residing outside the Basque region as the scene of the April 26, 1937, Bombing of Guernica, one of the first aerial bombings by Nazi Germany's Luftwaffe. It inspired the painting Guernica by Pablo Picasso.