Pierre Bastien (born 1953 in Paris) is a French musician, composer, and instrument builder. He began building mechanical-based musical instruments at an early age, using items such as metronomes, cymbals, and pulleys. In 1977 he began collaborating with Pascal Comelade and composing music for dance companies. He performed in ensembles such as Operation Rhino, Nu Creative Methods, and Effectifs de Profil.
Bastien has collaborated with artists such as Robert Wyatt, Jac Berrocal, Jaki Liebezeit, Pierrick Sorin, and Issey Miyake. He has released material on record labels such as Lowlands, Rephlex, Tigersushi, and Alga Marghen. He has also completed a doctorate on 18th century French literature, his thesis being on pre-surrealist Raymond Roussel.