Adelaida Avagyan (Armenian: ???????? ??????? ???????, April 6, 1924 – May 12, 2000) was an Armenian physician, researcher, and leader in healthcare.
She was the head of the Nutrition Hygiene (Nutritiology) laboratory from 1969–94 in the Institute of Nutrition Science and Professional Disease Prevention, Yerevan Armenia.
She is the author of more than 50 research articles in journals of the USSR.