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Investigator may refer to:


  • Clinical investigator, an investigator involved in a clinical trial
  • Detective, a person who investigates crimes, can be a rank and job in a police department, state or federal employee, or a civilian called a private detective
  • Inspector, a police rank in many countries
  • New investigator, a designation for less experienced researchers
  • Principal investigator, a researcher in a research project
  • Private investigator, a person who does not work for the police or government, but who undertakes investigations as a subcontractor
  • UN Special Investigator, a United Nations appointee, charged with investigations or auditing in a specific matter
  • Ghosthunter/Ghost Hunter or other Paranormal Investigators
  • Psychic detective, a person who investigates crimes by using purported psychic abilities.
  • In Mormon missionary terminology, an investigator refers to someone who is investigating the LDS Church. Generally, a non-member who is taking the missionary discussions.




  • Investigator Group, archipelago in South Australia
  • Investigator Strait, a body of water lying between Yorke Peninsula on the Australian mainland and Kangaroo Island, both in South Australia

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