Los Crudos is an American hardcore punk band, prominent during the 1990s. Based out of Chicago, Illinois, all four members were Latino, so Los Crudos chose to sing almost all of their songs in Spanish.

In addition, the band was extremely political; its leftist lyrics often commented on cultural and socio-economic difficulties inherent in the American way of life. Los Crudos incorporated DIY ethics into every aspect of the band including promoting and organizing shows, producing records, distribution, and so on.

This even included tours of Mexico and South America. The band's recordings appeared on independent record labels such as Flat Earth Records and lead singer Martin Sorrondeguy's label Lengua Armada Discos.

In 2004, Martin Sorrondeguy released his documentary film Beyond The Screams: A U.S. Latino Hardcore Punk Documentary, which focused on the Latino punk scene in the US. After Los Crudos came to an end, Sorrondeguy formed a new band, Limp Wrist, a queercore and straight edge band with which he performs.

He has also been in the bands Harto and Tragatelo, as well. Guitarist Jose has gone onto play in Chicago punk bands I Attack and Kontaminat. Their last drummer Ebro was also in Charles Bronson, MK-Ultra and Punch In the Face.

Los Crudos did a surprise reunion show at the first "Latino Fest" put on by Southkore records in Chicago. They also played a reunion show at Chaos in Tejas 2008 and are scheduled to play the 3rd Latino Fest in Los Angeles.

Along with Limp Wrist, Martin is also in NN and Needles.