placeholder name
name substituted for an unknown name
to be announced
placeholder term in event planning
Average Joe
a roughly average person, in a national context
Tommy Atkins
nickname for a British Soldier, especially used during World War I
Juan dela Cruz
national personification of the Philippines
wildcard character
character in a string pattern that substitutes for an arbitrary character or substring
J. Random Hacker
name for an arbitrary programmer
Jane Doe
placeholder name for an anonymous person
A. N. Other
placeholder name or pseudonym used by a person wishing to remain anonymous
The Dolly Gray Impostor
American-football player
Israel Israeli
Placeholder name used in Israel
disease X
placeholder name that was adopted by the World Health Organization (WHO) in February 2018 on a shortlist of blueprint priority diseases to represent a hypothetical, unknown pathogen that could cause a future epidemic
John Doe
placeholder name for an anonymous or unknown person
Prisoner X
placeholder name for some prisoners in Israel