Earthshaker (アースシェイカー, a-susheikā) is a Japanese heavy metal^[1] band that was formed in 1978 in Osaka. One of the first Japanese metal bands, they steered toward a poppier sound^{[citation needed]} on later albums and dropped from worldwide view, preferring to record and tour in their home country. After a successful run, they broke up in 1994, but returned five years later and remain active.

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The quintet from the nineties is still together. An early incarnation of the band included Minoru Niihara (of Loudness fame) as singer (originally bass and vocals).