X Anniversarium is the seventh studio album by the Spanish band Estopa.

It was released in 2009, marking the band's ten-year anniversary.

Additionally a comic of the band was released called Ultimate Estopa, as well as a poster of the band and a flag of their first concert as a gift.

The album received a Latin Grammy nomination for Best Pop Album by a Duo or Group with Vocals[1] The first DVD contains 24 video clips of the band, including live performances.

The second DVD called Regreso a la española is a documentary of the band narrated by their friends the band member José and David, and was directed by Andreu Buenafuente.