Martín Walter López Cardozo (born 20 May 1978 in Stockholm) is a Swedish-Uruguayan drummer, currently a member and co-founder of progressive metal group Soen, but best known as the ex-drummer of Swedish progressive metal band Opeth and melodic death metal band Amon Amarth.
López was born in Sweden to Uruguayan parents, later moving to Uruguay, then back to Sweden.
López joined Opeth in 1997, after leaving Swedish melodic death metal band Amon Amarth on whose album Once Sent From... meer