Sydney Zarlengo (they/them) is a disability historian, dramaturg, and actor in the world of theater, film, and tv in New York City.

They received their BA from Mount Holyoke College where they created some of the first guidelines in accessible design for performing arts curriculum in secondary and higher education, after which they gave professional trainings at arts programs around the country. As part of this work, they staged the first all-neurodivergent cast and crew production of The Curious Incident of the Dog in the Night-Time and made a subsequent documentary.

Sydney has since worked as dramaturg and historian for both new works and adaptations from The Tank to The Public, in addition to running a new accessibility program at Signature Theatre based on their access review program.

They also make online educational content about disability, pseudoscience, history, and media literacy with over 1.3 million views across platforms and occasionally give lectures around NYC.

As a performer, they are represented by RAFCO.