is a Mexican alternative rock band formed in 2005 in Mexico City.

The band gained quick recognition as one of the leading acts in Mexican alternative and indie rock,[1] placing their first commercial single "Bestia" on regular radio airplay by November 2008.

Early releases such as the EP Hoy a las Ocho featured lyrics in both English and Spanish, though later tracks are solely in the latter; these however deal about nonsense or surrealistic themes.

has shared the stage with bands such as Beastie Boys, Jarvis Cocker, Clinic[4] and The Killers.

Hello Seahorse's current line-up comprises a female vocalist/lyricist, and male keyboardist and drummer, with no guitarist.