Nina Chagall Marder is an American screenwriter, composer, and singer from Massachusetts. She is known for co-writing the screenplay for Sound of Metal (2019), for which she was nominated for Best Original Screenplay at the 93rd Academy Awards. Marder also co-composed the film's original score alongside Nicolas Becker, with contributions from percussionist and composer Evelyn Glennie. As a recording artist, she performs under the name Nina Chagall. Her original song "Green", produced by Thomas Bartlett and released by Nonesuch Records, closes the film and was shortlisted for the Academy Award for Best Original Song.
