to whom it may concern

US /tə huːm ɪt meɪ kənˈsɜːrn/
UK /tə huːm ɪt meɪ kənˈsɜːrn/
"to whom it may concern" picture
1.

関係者各位

a formal salutation used when the recipient's name is unknown or when the letter is addressed to an organization rather than an individual

:
I started the cover letter with 'To Whom It May Concern' as I didn't know the hiring manager's name.
採用担当者の名前が分からなかったので、カバーレターを「関係者各位」で始めました。
The official notice was addressed 'To Whom It May Concern'.
公式通知は「関係者各位」宛てでした。