Boris Borisovich Yegorov (cyrillic Борис Борисович Егоров), November 26, 1937, Moscow - September 12, 1994, Moscow, was a soviet doctor-cosmonaut.
Yegorov came from a medical background, with his father a prominent heart surgeon, and his mother an ophthamologist. He also selected medicine as a career and graduated from the First Moscow Medical Institute[?] in 1961. During the course of his studies, he had come into contact with Yuri Gagarin's training and had become interested in space medicine.
Yegorov was selected as a member of the multi-disciplinary team that flew on Voskhod 1. It has been suggested that his father's influence within the Politburo may have had some bearing on the selection.
He eventually earned a doctorate in medicine, with his specialisation being balance.
He was married three times and died from a heart attack.