Guerrilla is the third studio album by Welsh rock band Super Furry Animals. The record was released on 14 June 1999 by Creation Records and peaked at number 10 in the UK Albums Chart. Guerrilla was conceived as a commercial 'pop' album and was produced by the band themselves, as regular producer Gorwel Owen felt exhausted after a busy schedule working for other bands. Recording took place at Real World Studios, Box, Wiltshire in mid-1998 with the group experimenting with a sampler for the first time and writing a number of songs in the studio. The band tried to create a 45-minute long, immediate sounding record, and therefore chose the upbeat songs from the 25 tracks which were recorded during sessions for the album. Guerrilla was chosen as the album's title as a pun on the group's name.

Gruffudd Maredudd Bowen Rhys is a Welsh musician, composer, producer, filmmaker and author. He performs solo and with several bands, including Super Furry Animals, which obtained mainstream success in the 1990s. He formed the electro-pop outfit Neon Neon with Boom Bip. Their album Stainless Style was nominated for the 2008 Nationwide Mercury Prize. He won the 2011 Welsh Music Prize for his album Hotel Shampoo, which was followed up by American Interior in 2014, accompanied by a film, a book and a mobile app. His most recent album, Sadness Sets Me Free, was released in 2024. He is considered a figurehead of the era known as Cool Cymru.