Daniel M. Gallagher, Jr. (born May 31, 1972) is an American lawyer who served as a Commissioner of the U.S. Securities and Exchange Commission (SEC) from 2011 to 2015.

[2] Gallagher began his career in the private sector when he joined Wilmer, Cutler & Pickering (later WilmerHale) as an associate in the firm's Securities Department.

His next position took him to Fiserv Securities Inc. to serve as the company's senior vice president and general counsel.

Gallagher rejoined WilmerHale in September 2019 where he served as deputy chair of the firm's Securities Department.

[6] His practice focused on advising corporate boards and management on the full range of legal and strategic issues they faced, and counseling financial services and accounting firms in investigations, regulatory proceedings and policy matters.