Alain Johannes Mociulski (born May 2, 1962) is a Chilean-American multi-instrumentalist and vocalist, whose primary instruments are guitar and bass. He is a founding member of several bands, including the alternative rock group Eleven, and has been involved with acts such as hard rock band Queens of the Stone Age, Them Crooked Vultures, PJ Harvey, Chris Cornell, Arctic Monkeys, Mark Lanegan and The Desert Sessions, both as a musician and as a producer.
Alain Johannes is nephew of Chilean nueva ola musician Peter Rock. He was born in Santiago de Chile. He was married to Natasha Shneider from 1987 until her death in 2008.