Investigation or Investigations may refer to:

Look up investigation or investigate in Wiktionary, the free dictionary.

• Investigation, the work of a detective
• Investigation, the work of a private investigator
• Criminal investigation, the study of facts, used to identify, locate and prove the guilt of an accused criminal
• Criminal investigation department, the branch of British Police force to which plainclothes detectives belong
• Federal Bureau of Investigation, the primary investigative arm of the US Department of Justice
• Tax investigation

• Clinical trial, an investigation conducted to collect data for new drugs or devices
• Investigational New Drug, a category in a USFDA program
• Outbreak Investigation

• Forensic science investigation, in fields such as accounting, science, engineering and information technology
• Investigations in Numbers, Data, and Space, a K-5 mathematics curriculum

• All pages with titles containing Investigation
• Background investigation, an investigation into an individual's past
• Congressional investigation, an inquiry run by a congressional committee
• Discovery (observation), the act of detecting something new, or something "old" that had been unrecognized as meaningful
• Examination (disambiguation)
• Forensic science, in fields such as accounting, science, engineering and information technology
• Investigator (disambiguation)
• Research

This disambiguation page lists articles associated with the title Investigation.
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