Jack Gariss (; October 19, 1920 – January 19, 1985) was an American spiritual teacher and meditation instructor, and a radio personality on KPFK in Los Angeles from the 1960s until his death in Los Angeles in 1985. He was born in Nebraska. As a young man, in the 1950s, Jack Gariss attended University of Southern California and worked for Cecil B. DeMille. Most notably, he has a co-writing credit on DeMille's The Ten Commandments. In the late 1960s, Gariss began teaching meditation and started recording radio shows for KPFK about meditation and spiritual topics. Over the years, the shows were variously titled The Mystic Circle, then The Wayless Way, then Bio Meditation, then Bio-Cosmology, but are now routinely rebroadcast as Bio Meditation on Roy of Hollywood's KPFK show, on most Thursday nights / Friday mornings. Jack, assisted by his wife Janette, lovingly taught people how to identify and control and produce alpha brain waves (the "energy signature of the serene mind"—Maslow) at his home in the San Fernando Valley. He had a substantial library and was the perennial student of religion and spirituality. He seemed to gravitate to Eastern religions, particularly Taoism.