Legal name is the name that identifies a person for legal, administrative and other official purposes. A person's first legal name generally is the name of the person that was given for the purpose of registration of the birth and which then appears on a birth certificate (see birth name), but may change subsequently. Most jurisdictions require the use of a legal name for all legal and administrative purposes, and some jurisdictions permit or require a name change to be recorded at marriage. The legal name may need to be used on various government issued documents (e.g., a court order). The term is also used when an individual changes their first or full name, typically after reaching a certain legal age (usually 18 or over, though it can be as low as 14 in several European nations).
A person's legal name typically is the same as their personal name, comprising a given name and a family name. The order varies according to culture and country. There are also country-by-country differences on changes of legal names by marriage. (See married name.)
The legal name of a business is the name under which the business conducts its operations.
In the UK businesses that trade under names other than those of the owner or a corporate entity must display the name of owner and an address at which documents may be served, or the name and registered number of the corporate body and its registered address. The requirements apply to sole traders and partnerships, but there are special provisions for large partnerships where listing all partners would be onerous.
The information must be shown on any trading premises where the public have access to trade and in documents such as order forms, receipts and, as of January 2007, corporate websites (to be extended later in 2007 to sole trader websites).