Marquis Who's Who
Professional ServicesNew York, United States51-200 Employees
Marquis Who's Who operates as a professional services organization that curates and publishes biographical profiles of leaders and notable professionals from the United States and around the world. Its offerings include traditional print volumes and Marquis Biographies Online, a web-based platform that provides real-time access to a database with more than one million biographies and supports targeted searches. The firm traces its history to 1898 and is based in Uniondale, New York. Its primary audience includes librarians, researchers, students, corporate executives, journalists, and recruiters who rely on credible, in-depth biographical information for reference and decision-making. In February 2026, Marquis Who's Who announced the addition of Steven Zebrak to its team, reflecting ongoing leadership updates tied to its expanding emphasis on AI and SaaS-related activities.
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