List of unsolved deaths

This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (March 2023) (Learn how and when to remove this template message)

This article may present fringe theories, without giving appropriate weight to the mainstream view and explaining the responses to the fringe theories. Please help improve it or discuss the issue on the talk page. (August 2015) (Learn how and when to remove this template message)

This list of unsolved deaths includes well-known cases where:

• The cause of death could not be officially determined
• The person's identity could not be established after they were found dead
• The cause is known, but the manner of death (homicide, suicide, accident) could not be determined
• Different official investigations have come to different conclusions

Cases where there are unofficial alternative theories about deaths – the most common theory being that the death was a homicide – can be found under: Death conspiracy theories.