Bertrand Castelli (December 3, 1929, Salon-de-Provence – August 1, 2008) was a French producer, director, lighting designer, choreographer, painter and writer best known as the executive producer of many productions of the rock musical Hair in partnership with the show's main producers Michael Butler and Annie Fargue. Castelli was instrumental in helping the show reach Broadway and would later lead the effort to introduce Hair to a worldwide theatre audience.