Mark W. Nelson

EVP, General Counsel at T-Mobile

With deep expertise in regulatory and global antitrust matters as well as in U.S. civil litigation, Nelson is one of the most highly regarded lawyers in Washington, D.C.

Having practiced law for over 25 years at Cleary Gottlieb, Nelson joined T-Mobile with a broad range of experience in merger work and antitrust counseling, civil and criminal litigation, and regulatory proceedings before federal and state government agencies. Nelson is distinguished as one of the nation’s leading antitrust lawyers and litigators by Chambers, Benchmark Litigation, and Legal 500, among other publications. Notably, he has been counsel to T-Mobile US for the past two decades and has advised the company on a variety of matters, including T-Mobile US’s acquisition of MetroPCS and its merger with Sprint, for which Nelson was recognized by The American Lawyer as both “Dealmaker of the Year” and “Litigator of the Week.” Nelson received a Juris Doctor from Harvard Law School and a Bachelor of Science degree from Cornell University.


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  • EVP, General Counsel

    October, 2021 - present