Mark Osler
Co-Founder, Federal Expungement Initiative
University of St. Thomas, School of Law · Minnesota
Osler is a former federal prosecutor who works on clemency and sentencing reform and co-founded the Clemency Resource Center.
About Mark Osler
Mark Osler is a professor and advocate for sentencing and clemency reform, known for his work on human dignity in criminal justice. A former federal prosecutor, he played a key role in the Supreme Court’s Spears v. United States case and co-founded the Clemency Resource Center. Osler’s writing appears in major publications, and he has received multiple teaching awards. He is the author of books on the death penalty and holds degrees from William and Mary and Yale Law School.
Read our position on federal expungement or meet everyone in the coalition.
Hear Mark speak

Mark Osler and Alex on Pardons, Clemency, and the Trauma of Asking for Forgiveness
October 12, 2026, Panelist
Mark Osler and Todd Haugh on Pardons, Clemency and Federal Expungement
October 18, 2025, Panelist