Определения

• a person or group with a interest or concern in something — лицо или группа, заинтересованные в чем-либо
• a person or group of people who own a share in a business — акционер
• a person such as an employee, customer, or citizen who is involved with an organization, society, etc. and therefore has responsibilities towards it and an interest in its success — заинтересованная сторона
• a person who is in charge of the prize money given by people betting on the result of a game or competition and who gives it to the winner — держатель ставок
• an employee, investor, customer, etc. who is involved in or buys from a business and has an interest in its success: — заинтересованное лицо
• a person who has an interest in a company or project — лицо, имеющее интерес в компании или проекте

Примеры использования