Joe Mahr is an American investigative journalist, who won the 2004 Pulitzer Prize for Investigative Reporting.
In 2004, Mahr was awarded the 2004 Pulitzer Prize for Investigative Reporting along with Mitch Weiss and Michael D. Sallah, for a series on the atrocities committed by Tiger Force, a U.S. Army platoon during the Vietnam War. The trio also received The Medal by Investigative Reporters & Editors; a first-place Sigma Delta Chi Award for investigative reporting; a first-place Nieman Award presented by the Nieman Foundation for Journalism at Harvard University, and a first-place award for investigative reporting by Associated Press Society of Ohio.
His investigative work for the Toledo Blade also included an investigation into allegations that the police in Toledo refused to arrest or investigate abusive priests In addition to his Pulitzer Prize–winning work, Mahr has also written a series of stories looking at abuse and neglect in the mental health system for the St. Louis Post-Dispatch.
- Kelly Lecker (2004-04-06). "Blade wins Pulitzer: Series exposing Vietnam atrocities earns top honor". Toledo Blade. Retrieved 2009-05-02.
- "Finalist: Joe Mahr, Joseph Ryan and Matthew Walberg of Chicago Tribune".
- Madeleine Brand (2005-08-02). "Report: Toledo Cops Refused to Probe Priest Abuse". National Public Radio. Retrieved 2009-05-02.
- Mahr, Joe. "Author Profile". Chicago Tribune. Retrieved 18 July 2014.
- "2015 Pulitzer Prize for Local Reporting Finalists". www.pulitzer.org. Retrieved 2017-09-13.