Fermin Muguruza (born 20 April 1963) is a Spanish Basque rock musician, singer, songwriter, producer, record label manager, and co-founder of the ska punk band Kortatu, active from 1983 to 1988, and of the crossover group Negu Gorriak, active from 1990 to 1996.

[1] His song "Sarri, Sarri", a Basque cover of Toots & the Maytals' "Chatty Chatty", grew into a highly popular song during the 80s, where he makes an explicit reference to Joseba Sarrionaindia's artful escape from prison in 1985.

More recently he has developed a solo career, always defending the use of the Basque language and the need for social justice.

At an international level, Fermin Muguruza holds acute left-wing views that lead him to criticize the U.S. government, corporations and the globalization process, all of which he denounces as imperialistic and homogenizing.

In his track "Euskal Herria Jamaika Clash!, Fermin Muguruza mixes Jamaican rhythms with sounds from Basque traditional musical instruments to produce unique musical hybrids that feature Basque heritage and culture.