This category is for individuals whose precise year of birth is indicated, but the month and day are lost to history and never likely to be known.

For individuals in Category:Living people or Category:Possibly living people, and historically recent individuals who are no longer alive, whose month and day of birth are presumed to have been recorded and could be researched, please use Category:Date of birth missing instead.

For individuals whose period of activity occurred before the second half of the 19th century, documentation for whose complete vital statistics is presumed to be lost or nonexistent, please use Category:Year of birth unknown.

This category and categories Category:Date of birth missing, Year of birth missing, and Year of birth unknown are intended to be mutually exclusive.

When the year of birth for living individuals has been researched, but the month and day remain missing, please do not use Category:Date of birth missing before ascertaining the individual's full public prominence. The privacy of marginally-notable "non-public figures" must be respected; see WP:NPF and WP:BLP#Privacy of birthdays. Such people, even if their entire date of birth is available in a public record, should only have their year of birth given and be placed in Category:Living people, or be placed in Category:Year of birth missing (living people) if the year is missing.

• Category:Year of birth missing
• Category:Year of birth missing (living people)
• Category:Year of birth unknown
• Category:Date of birth missing
• Category:Date of birth missing (living people)
• Category:Date of birth unknown
• Category:Place of birth missing
• Category:Place of birth missing (living people)
• Category:Place of birth unknown
• Category:Year of death missing
• Category:Year of death unknown
• Category:Date of death missing
• Category:Date of death unknown
• Category:Place of death missing
• Category:Place of death unknown

• Category:Living people
• Category:Possibly living people