Investigator

• 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

• Clinical investigator, an investigator involved in a clinical trial
• 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
• Ghost hunter or other paranormal investigator
• 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 (magazine), journal of the Geelong Historical Society
• The Investigator, a 1954 Canadian radio play
• The Investigator (TV pilot), a 1973 British TV pilot
• The Investigator: A British Crime Story, a British television documentary

• HMS Investigator, name of ships in the Royal Navy
• RV Investigator, Australian research vessel built in 2013

• Investigator Group, archipelago in South Australia
• Investigator Marine Park, a marine protected area in South Australia
• Investigator Strait, a strait in South Australia

• Investigation (disambiguation)
• Investigator Group (disambiguation)
• The Investigators (disambiguation)

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