Josiah Clark Steinbrick (born July 13, 1981) is an American multi-instrumentalist, composer, and record producer, currently based in Los Angeles, California, United States. Aside from his own solo works and performances with his BANANA ensemble, he has produced albums by Cate Le Bon and Devendra Banhart and has recorded with artists such as Danger Mouse, Charlotte Gainsbourg, Gruff Rhys, Rodrigo Amarante, and Sam Gendel. He provided the score to the 2020 film, Horse Girl, starring Alison Brie.