Jane Doe

The names "John Doe" or "John Roe" for men, "Jane Doe" or "Jane Roe" for women, "Johnny Doe" and "Janie Doe" for children, or just "Doe" non-gender-specifically are used as placeholder names for a party whose true identity is unknown or must be withheld in a legal action, case, or discussion. The names are also used to refer to a corpse or hospital patient whose identity is unknown. This practice is widely used in the United States and Canada, but is always used in other English-speaking countries including the United Kingdom, from which the use of "John Doe" in a legal context originates. The names "Joe Bloggs" or "John Smith" are used in the UK as placeholder names, (mainly to mean 'any old person', the classic 'Everyman') as well as in Australia and New Zealand.

John Doe is sometimes used to refer to a typical male in other contexts as well, in a similar manner to John Q. Public in the United States or Joe Public, John Smith or Joe Bloggs in Britain. For example: the first name listed on a form might be John Doe, along with a fictional address or other fictional information to provide an example of how to fill in the form. The name is also used frequently in US popular culture, for example in the Frank Capra film Meet John Doe. John Doe was also the name of a 2002 American television series.

Similarly, a child or baby whose identity is unknown may be referred to as Baby Doe. A notorious murder case in Kansas City, Missouri, referred to the baby victim as Precious Doe. Other unidentified female murder victims have also been nicknamed by the public or investigators as "Cali Doe" and "Princess Doe". Additional persons may be called James Doe, Judy Doe, etc. However, to avoid possible confusion, if two anonymous or unknown parties are cited in a specific case or action, the surnames Doe and Roe may be used simultaneously; for example, "John Doe v. Jane Roe". If several anonymous parties are referenced, they may simply be labelled John Doe #1, John Doe #2, etc. (the U.S. Operation Delego cited 21 (numbered) "John Doe"s) or labelled with other variants of Doe / Roe / Poe / etc. Other early alternatives such as John Stiles and Richard Miles are now rarely used, and Mary Major has been used in some American federal cases.

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