Mary Kay Dunning is an associate in the New York office of Gibson, Dunn & Crutcher and a member of the firm's litigation department. 

Ms. Dunning graduated from Georgetown University Law Center in 2004, where she was the Publications Editor of The Tax Lawyer. Upon graduation, she served as a law clerk to The Honorable Deborah T. Poritz, Chief Justice of the New Jersey Supreme Court. Ms. Dunning received a Bachelor of Arts degree, summa cum laude, in Romance Languages and Literatures from Princeton University in 1999.

Ms. Dunning is admitted to practice law in New York, New Jersey, the District of Columbia, and the United States District Court for the Southern and Eastern Districts of New York.