Dennis William Mahon

Dennis William Mahon, 69, was born in Illinois.  He got involved with White nationalist causes in the 1970’s and joined the Ku Klux Klan.  In 1988 he and his brother left to form the Missouri White Knights of the Ku Klux Klan in the Kansas City area.  The next year in Northmoor, Missouri, he ran for Alderman on a platform of keeping the community White which he ultimately lost.

In 1991 Mahon journeyed to multiple German cities to recruit for the Klan.  He led a cross burning in an area Southeast of Berlin.  A couple years later in the early 90’s Mahon became affiliated with Tom Metzger’s White Aryan Resistance in Tulsa Oklahoma as he felt the Klan had become to infiltrated and moderate.

After a 2004 bombing at the Scottsdale Office of Diversity and Dialogue Mahon quickly became a suspect and was the subject of a five year investigation by the FBI.  He was arrested in 2009 based on information from an informant and sentenced to forty years in prison.  He is incarcerated at FCI Terra Haute.







Send a Letter

Dennis is able to receive letters.

Letters must contain your return address or they won't be received. Please review our guide, How to Write a Prisoner for more helpful tips.

Your Full Name
Your Street Address
Yourville, CA 90210

postage stamp

Dennis William Mahon
P.O. Box 33
Terre Haute, IN 47808

Send an Update

Have you spotted an error? Do you have additional information?

This online form is for contacting GMI Staff, not for contacting inmates directly.