

There are many variants to the above names, including John Roe, Richard Roe, Jane Roe, Baby Doe, and Janie Doe or Johnny Doe (for children). These names are also often used to refer to a hypothetical " everyman" in other contexts, in a manner similar to John Q. In the context of law enforcement in the United States, such names are often used to refer to a corpse whose identity is unknown or unconfirmed. John Doe (male) and Jane Doe (female) are multiple-use placeholder names that are used when the true name of a person is unknown or is being intentionally concealed. In the same cemetery, the murdered Deanna Criswell was called "Jane Doe 19" for 27 years until she was genetically identified in 2015 by her relatives with help from the FBI and The Doe Network. They are called "John Doe" or "Jane Doe" followed by a number sign (#) and a number.

Four headstones marking the single grave of four unknown people in the Pima County Cemetery, Tucson, Arizona, United States.
