Ghost hunting is the process of investigatinglocations that are reported to be haunted byghosts. Typically, a ghost-hunting team will attempt to collect evidence supporting the existence of paranormal activity. Ghost hunters use a variety of electronic devices, including EMF meters, digital thermometers, both handheld and static digital video cameras, job including thermographic and night vision cameras, as well as digital audio recorders. Other more traditional techniques are also used, such as conducting interviewsand researching the history of allegedly haunted sites. Ghost hunters may also refer to themselves as "paranormal investigators."

Ghost hunting has been heavily criticized for its dismissal of the scientific method. No scientific study has ever been able to confirm the existence of ghosts.The practice is considered a pseudoscience by a vast majority of educators, academics, science writers, and skeptics.Science historian Brian Regal described ghost hunting as "an unorganized exercise in futility".