Jon Hanna is a freelance writer, editor, conference producer, and lecturer working in the field of entheogens and psychoactives.

He is best known as the producer of the Mind States conference series, which explores various means of achieving altered states of consciousness. Projects he has edited have included the books Back From The Void by Zoe Seven, Higher Wisdom compiled by Drs. Charles S. Grob and Roger Walsh, Ketamine: Dreams and Realities by Dr. Karl Jansen, The Spirit of the Internet by Lawrence Hagerty, and three special issues of the Multidisciplinary Association for Psychedelic Studies Bulletin.

Author of the Psychedelic Resource List, Hanna is considered somewhat of a "psychedelic consumer advocate", highlighting reputable vendors as well as exposing companies, events, and individuals that have less than scrupulous records. He has written articles and reviews for Entheogene Blätter, The Entheogen Review, Erowid, Heads, High Times, Morbid Curiosity, and The Resonance Project.

He has spoken internationally on the topics of visionary art and entheogens, most recently showcasing a collection of hallucinatory animation at the 2006 LSD conference in Basel, Switzerland.