C.J. Mahoney

Chief Legal Officer Meta Platforms

Last Reviewed: October 1, 2026

Executive Summary

C.J. Mahoney became Meta’s Chief Legal Officer in January 2026. He came from Microsoft, where he was a corporate vice president and general counsel for its product, services and go-to-market legal work, and before that deputy general counsel for its cloud and AI business. Earlier he was Deputy United States Trade Representative from 2018 to 2020, a partner at Williams & Connolly for a decade, and a law clerk to Justice Anthony Kennedy. Meta Platforms ranked No. 17 on the 2026 Fortune 500.

Career Highlights

• Chief Legal Officer of Meta Platforms since January 2026.
• Corporate Vice President and General Counsel at Microsoft, 2025 to 2026.
• Deputy United States Trade Representative, 2018 to 2020.
• Partner at Williams & Connolly, 2008 to 2018.
• Law clerk to Justice Anthony Kennedy.

Professional Journey

Mahoney earned an AB in government at Harvard University and a JD at Yale Law School, and clerked for Justice Anthony Kennedy of the U.S. Supreme Court. He was a partner at Williams & Connolly from 2008 to 2018.

From 2018 to 2020 he was Deputy United States Trade Representative. He joined Microsoft in 2021 as Deputy General Counsel for U.S. international trade and Azure, became Corporate Vice President and Deputy General Counsel for Cloud + AI in 2023, and in 2025 Corporate Vice President and General Counsel for product, services and go-to-market legal.

He joined Meta as Chief Legal Officer in January 2026.

Education

Harvard University

Bachelor of Arts, Government

Yale Law School

Juris Doctor