Mark J. Sullivan is a New York–based editorial photographer working in fashion, culture, and public life. His work emphasizes clean composition and documentary judgment—street-driven, detail-focused, and shaped for publication.

He photographs runway and street style during Fashion Week, portraits and editorial fashion in New York City, and ongoing coverage at the United Nations, where he has been credentialed through Zuma Press Wire since 2021. His work is distributed internationally through Zuma Press Wire, with downstream availability via Reuters Connect, supplying editorial imagery to newsrooms and institutional clients worldwide.

Based in New York, he works on assignment and commission throughout the United States.