Gennady Modestovich Mikhasevich (Belarusian: Генадзь Мадэставіч Міхасевіч; 7 April 1947 – 25 September 1987) was a prolific Soviet serial killer.

He invariably strangled or smothered his victims, either assaulting them in solitary locations or, during later years, after having lured them into his own red Zaporozhets or the cars at his workplace (he later had a job in an auto repair shop).

Mikhasevich did not carry weapons, choosing instead to use a variety of improvised means, including in one case, a cord made of rye.

The police also suspected that the serial killer was using a red Zaporozhets; as they started checking all the people of the Oblast who possessed such a car, Mikhasevich, as a druzhinnik, participated in these actions - essentially, searching for himself.

In order to derail the investigation, he sent an anonymous letter to the local newspaper on behalf of an imaginary underground organization, 'Patriots of Vitebsk', purportedly calling on his fellow militants to intensify their struggle of killing communists and lewd women.

When he left a similar hand-written note next to his new victim, again signed on behalf of 'Patriots of Vitebsk', the investigators started to ascertain the handwriting of the male residents of the Oblast.