Warren Sonbert (June 26, 1947 – May 31, 1995) was an American experimental filmmaker whose work of nearly three decades began in New York in the mid-1960s, and continued in San Francisco throughout the second half of his life. Known for the exuberant imagery of films such as "Carriage Trade" and especially for their intricate and innovative editing, he has been described as "the supreme Romantic diarist of the cinema" as well as "both a probing and playful artist and a keen intellect reveling in the interplay between all the creative arts."