John Rowan (31 March 1925 – 26 May 2018) was an English author, counsellor, psychotherapist and clinical supervisor, known for being one of the pioneers of humanistic psychology and integrative psychotherapy. He worked in exploring transpersonal psychology, and wrote about the concept of subpersonality. Rowan was a qualified individual and group psychotherapist (UKAHPP and UKCP), a Chartered counseling psychologist (BPS) and was an accredited counsellor (BACP). He worked in private practice in London.