| Subject | English | Russian |
| adv. | principal user | основной пользователь |
| econ. | principal user | основной потребитель |
| IT | principal user | главный пользователь (Лицо, которому приписан телефонный аппарат и которое может пользоваться службой пункта приёма и поиска сообщений. inplus) |
| d.b.., comp., MS | special user principal | особый субъект-пользователь (The dbo user is a special user principal in each database. Alex_Odeychuk) |
| telecom. | user principal name | главное имя пользователя (oleg.vigodsky) |
| comp., MS | user principal name | имя участника-пользователя (A user account name (sometimes referred to as the user logon name) and a domain name identifying the domain in which the user account is located. This is the standard usage for logging on to a Windows domain. The format is: user) |
| comp., MS | user principal name suffix | суффикс имени участника-пользователя (The part of the user principal name (UPN) to the right of the name; The part of the user principal name (UPN) to the right of the character. The default UPN suffix for a user account is the DNS domain name of the domain that contains the user account. Alternative UPN suffixes may be added to simplify administration and user logon processes by providing a single UPN suffix for all users. The UPN suffix is only used within the Active Directory forest, and it is not required to be a valid DNS domain name) |