Alexander Belyaev was born in Smolensk in the family of an Orthodox priest. His father, after losing two other children (Alexander's sister Nina died at childhood from sarcoma and his brother Vasiliy, a veterinary student, drowned during a boat trip), wanted him to continue the family tradition and enrolled Alexander into Smolensk seminary. Belyaev, on the other hand, didn't feel particularly religious and even became an atheist in seminary. After graduating he didn't take his vows and enrolled into a law school. While he studied law his father died and he had to support his mother and other family by giving lessons and writing for theater.