A birth name is the personal or family name assigned to a person at birth or in early childhood and typically recorded on a birth certificate or civil register. In many contexts the phrase refers to the surname or the full legal name a child receives from parents. The term is often used to distinguish an original name from names adopted later in life for reasons such as marriage, adoption, gender transition, religious conversion, professional usage, or other legal changes. The concept of a birth name exists in most societies, but its form, legal weight and social meaning vary widely.

Several related terms are used to describe name changes or variants that relate to a birth name. A maiden name commonly denotes the family name a woman has before marriage. A married name is a surname adopted on marriage; this might involve one partner taking the other’s name, both partners adopting a hyphenated or combined form, or neither changing. The phrase legal name refers to the name recognized by law at a given time and may differ from the birth name after a formal change. For general background on surnames and naming systems, see resources about the family name and broader naming conventions.

Common contexts that change or preserve a birth name

People may retain their birth name or choose to adopt a different name for many reasons. Typical situations include:

  • Marriage: one partner may adopt the other’s surname, both partners may hyphenate or blend names, or a couple may create a new joint surname. See discussions of marital naming for common patterns and options.
  • Adoption: a child may receive the adoptive family’s surname, replacing the original birth surname as a legal matter.
  • Gender transition: many people change given names and sometimes surnames to reflect their gender identity, following local legal procedures.
  • Professional or artistic names: stage names, pen names, or trade names may be used publicly while the legal birth name remains unchanged unless formally altered.
  • Religious or cultural changes: conversion or initiation rites can result in a new name used in specific communities or rites of passage.

Naming practices differ considerably among cultures. In many Spanish-speaking countries people commonly use two family names (one from each parent), while in Iceland surnames are typically patronymic or matronymic and change with each generation. In some societies a child’s birth name may include clan identifiers, caste or lineage markers, or elements that indicate social status. Legal requirements for changing a name also vary: some jurisdictions permit relatively easy administrative changes, others require court orders, publication, or justification. Official civil registries and passport offices are typically the authorities that record and update names; consult the relevant official records or civil registry guidance for jurisdiction-specific procedures.

Notation and historical usage

In biographical and historical writing it is common to indicate an earlier surname with the French words né (for a man) or née (for a woman), literally meaning "born". These terms are borrowed from French and are used in many languages to show that a person was born under a different name. For linguistic background on the origin and use of these terms, readers may consult material on French usage and etymology at resources about né/née.

Genealogy, recordkeeping and identity

Birth names are central to genealogical research because they help link individuals across records and generations. When searching archives, censuses, marriage records or immigration documents, researchers often need to trace name variants and changes. Legal name changes should be documented through the issuing authority so that identity documents, tax records and property titles remain consistent. In contexts such as background checks, inheritance claims, or legal proceedings, establishing a person’s birth name and the record of any subsequent legal changes can be essential.

Practical considerations and social significance

A birth name can carry information about family history, ethnic origin, regional background or lineage. Changing a name may reflect personal choice, social mobility, marriage customs, or efforts to assimilate in a different culture. Social attitudes toward retaining or changing birth names vary; some people view name retention as a way to preserve family identity, while others see change as a form of individual expression. For readers seeking more on surname systems and naming customs, see entries on the family name, naming conventions and practical guidance from official records. For discussion of marital options and practices, additional information is available under marital naming.