Investigation, Investigating judge (France), Fire investigation, Swedish Accident Investigation Authority, Investigating Directorate: SEO v Hyundai Motors, Congressional committees investigating the Iran–Contra affair, Senate Preparedness Investigating Subcommittee, Norwegian Safety Investigation Authority, Investigating Innocence, Investigator, Investigative journalism, Investigative Committee of Russia, National Investigation Agency, Air Accidents Investigation Branch, Central Bureau of Investigation, Illinois Division of Criminal Investigation, Investigating censor, Investigation of diving accidents, Defense Criminal Investigative Service, Criminal investigation, Investigative Reporting Workshop, Al Jazeera Investigations, Safety Investigation Authority, California Bureau of Investigation, Private investigator, Insurance investigator, Investigating Tarzan, Half Moon Investigations, Child abuse investigation team, Criminal Procedure and Investigations Act 1996, Investigating Sex, Special Investigations Unit, Mueller special counsel investigation, Criminal Investigation Department, Centre for Investigative Journalism, The Bureau of Investigative Journalism, Naval Criminal Investigative Service, Papua New Guinea Accident Investigation Commission, State bureau of investigation, Special Investigations, Murder Investigation Team (TV series)

Examining magistrate, State Commission on Aircraft Accidents Investigation, Investigations Police of Chile, Directorate for Investigating Organized Crime and Terrorism, IRS Criminal Investigation, Investigator Group, Coast Guard Investigative Service, Special Investigations Bureau, Special Investigative Service of Armenia, Special Investigating Unit, EHRC–OHCHR Tigray investigation, Durham special counsel investigation, Principal investigator, Federal Bureau of Investigation, Investigative Reporters and Editors, Ohio Bureau of Criminal Investigation, Aviation and Railway Accident Investigation Board, Criminal Investigation Department (Kenya), Reactions to the Mueller special counsel investigation, Customs Intelligence and Investigation Directorate, Adventure Time: Finn & Jake Investigations, North Carolina State Bureau of Investigation, Transport Safety Investigation Bureau, Director of the Federal Bureau of Investigation, Investigation Department, Ministry of Justice Investigation Bureau, Kentucky Department of Criminal Investigation, National Bureau of Air Accidents Investigation of Ukraine, Geotechnical investigation, Marine accident investigation, The Center for Investigative Reporting, Three Investigators, Timeline of investigations into Donald Trump and Russia, Presentence investigation report, The Investigators, Investigation Discovery (European TV channel), Marine Accident Investigation Branch, Criminal Investigation Department (disambiguation), ICAC Investigators, Georgia Bureau of Investigation, Investigation Agency-ICTBD, National Aviation Investigation Agency and Railway Accidents and Transportation Safety, Air Force Office of Special Investigations, Tennessee Bureau of Investigation, Impeachment investigation, Federal Bureau for Maritime Casualty Investigation, Special Investigations Division, United States Army Criminal Investigation Division, Topics of the Mueller special counsel investigation, Sci Fi Investigates

Investigation, Investigating judge (France), Fire investigation, Swedish Accident Investigation Authority, Investigating Directorate: SEO v Hyundai Motors, Congressional committees investigating the Iran–Contra affair, Senate Preparedness Investigating Subcommittee, Norwegian Safety Investigation Authority, Investigating Innocence, Investigator, Investigative journalism, Investigative Committee of Russia, National Investigation Agency, Air Accidents Investigation Branch, Central Bureau of Investigation, Illinois Division of Criminal Investigation, Investigating censor, Investigation of diving accidents, Defense Criminal Investigative Service, Criminal investigation, Investigative Reporting Workshop, Al Jazeera Investigations, Safety Investigation Authority, California Bureau of Investigation, Private investigator, Insurance investigator, Investigating Tarzan, Half Moon Investigations, Child abuse investigation team, Criminal Procedure and Investigations Act 1996, Investigating Sex, Special Investigations Unit, Mueller special counsel investigation, Criminal Investigation Department, Centre for Investigative Journalism, The Bureau of Investigative Journalism, Naval Criminal Investigative Service, Papua New Guinea Accident Investigation Commission, State bureau of investigation, Special Investigations, Murder Investigation Team (TV series), Examining magistrate, State Commission on Aircraft Accidents Investigation, Investigations Police of Chile, Directorate for Investigating Organized Crime and Terrorism, IRS Criminal Investigation, Investigator Group, Coast Guard Investigative Service, Special Investigations Bureau, Special Investigative Service of Armenia, Special Investigating Unit, EHRC–OHCHR Tigray investigation, Durham special counsel investigation, Principal investigator, Federal Bureau of Investigation, Investigative Reporters and Editors, Ohio Bureau of Criminal Investigation, Aviation and Railway Accident Investigation Board, Criminal Investigation Department (Kenya), Reactions to the Mueller special counsel investigation, Customs Intelligence and Investigation Directorate, Adventure Time: Finn & Jake Investigations, North Carolina State Bureau of Investigation, Transport Safety Investigation Bureau, Director of the Federal Bureau of Investigation, Investigation Department, Ministry of Justice Investigation Bureau, Kentucky Department of Criminal Investigation, National Bureau of Air Accidents Investigation of Ukraine, Geotechnical investigation, Marine accident investigation, The Center for Investigative Reporting, Three Investigators, Timeline of investigations into Donald Trump and Russia, Presentence investigation report, The Investigators, Investigation Discovery (European TV channel), Marine Accident Investigation Branch, Criminal Investigation Department (disambiguation), ICAC Investigators, Georgia Bureau of Investigation, Investigation Agency-ICTBD, National Aviation Investigation Agency and Railway Accidents and Transportation Safety, Air Force Office of Special Investigations, Tennessee Bureau of Investigation, Impeachment investigation, Federal Bureau for Maritime Casualty Investigation, Special Investigations Division, United States Army Criminal Investigation Division, Topics of the Mueller special counsel investigation, Sci Fi Investigates, Transport Accident Investigation Commission, Investigations (Star Trek: Voyager), Investigate (magazine), Belarusian Investigative Center, Kirk's Fire Investigation, Transport Accident and Incident Investigation Bureau, Office of Special Investigations, Korea Aviation Accident Investigation Board, Medical Investigation, Canales Investigation, Nigerian Safety Investigation Bureau, Investigations into the Eric Adams administration, Legal teams involved in the Mueller special counsel investigation, A Simple Investigation, Investigations into the 2012 Benghazi attack, American Board of Medicolegal Death Investigators, Criminal Investigation Task Force, The Investigative Project on Terrorism, Jersey child abuse investigation, Special Investigations Section, Crime scene investigation, Investigator's brochure, Laboratory Investigation, USS Investigator, United States House Oversight Committee investigation into the Biden family, Global Investigative Journalism Network, Investigative judgment, Winter Soldier Investigation, Crossfire Hurricane (FBI investigation), Use of social network websites in investigations, Accident Investigation Branch, Crime & Investigation (Europe, Middle East and Africa), U.S. Chemical Safety Board, Special Investigation Branch, Ace Attorney Investigations 2: Prosecutor's Gambit, Patient under investigation, HMS Investigator (1801), Plame affair criminal investigation, Office of Criminal Investigations, Pulitzer Prize for Investigative Reporting, Aircraft and Railway Accidents Investigation Commission, Journal of Clinical Investigation, 2017–2020 Thai temple fraud investigations, National Bureau of Investigation, Federal Investigation Agency, Railway Accident Investigation Unit, Aircraft Accident Investigation Commission, Joint investigation team, United States Marine Corps Criminal Investigation Division, Aircraft Accident Investigation Committee, Accident Investigation Board, Logical Investigations, Office for the Prevention and Investigation of Accidents in Civil Aviation and Rail, Tax investigation, Investigative journalism (disambiguation), Exposé: America's Investigative Reports, Criminal Investigation Department (India), Cash Investigation, Special Investigation Service, National Security Investigations Team (New Zealand)