|Born||21 March 1971|
|Known for||Paranormal Investigator on Most Haunted|
Ciarán James O'Keeffe (born 21 March 1971) is an Irish psychologist specialising in parapsychology and forensic psychology. Prior to his academic psychology career he trained in contemporary arts and had a teaching position on the BA Art programme at the IADT (Institute of Art, Design & Technology) in Dublin, where he still holds an "Assistant Lecturer" position. He is currently employed at Bucks New University. He has held a research associate position at the University of Toulouse II - Le Mirail and also an online tutor position at Derby University. Previously employed at Liverpool Hope University, lecturing in psychology with a parapsychology component, O'Keeffe is a member of the Society for Psychical Research and a senior advisor to The Ghost Club. According to his own website, he completed his PhD at the University of Hertfordshire under the supervision of Richard Wiseman and Julia Buckroyd.
O'Keeffe became known in the United Kingdom following his appearances on Living TV's paranormal television series Most Haunted and Jane Goldman Investigates, where he performs the role of parapsychologist and paranormal investigator. He also featured in National Geographic Channel's 2005 series Paranormal?. O'Keeffe is an open-minded skeptic on most paranormal phenomena. Also appeared on Ghost Adventures in the Hellfire Caves.
O'Keeffe attended Washington College in Chestertown, Maryland, where he double majored in music and psychology. He then completed a MSc in investigative psychology at the University of Liverpool and an MA in Contemporary Sculpture from Goldsmiths before studying for his PhD at University of Hertfordshire. He is currently the Academic Head of Department and Senior Lecturer for Psychology at Buckinghamshire New University 
He is currently living in a village in Buckinghamshire with his wife, 2 children and 4 cats, 2 rabbits, 3 hedgehogs and an exotic South American breed of hamster called Yvette. His father is Irish and his mother is Swedish. He is an avid tennis player and currently plays for a county league team.
- About me section at theparapsychologist.com (accessed 2012 April 11)
- According to the British Library Electronic Theses Online Service, O'Keeffe's October 2004 PhD thesis has the title: "Assessing the content of advice from practitioners claiming paranormal ability".
- "Dr. Ciarán O'Keeffe on Most Haunted". Archived from the original on 12 February 2009. Retrieved 29 October 2008.