Boris Hvoynev (; born 19 August 1967) is a former Bulgarian footballer who played as a forward. He spent more than a decade with Botev Plovdiv and appeared in over 200 matches in the Bulgarian top league. Hvoynev was capped two times at the senior level by the Bulgaria national team, making his debut on 10 January 1993, in the 0:3 loss against Tunisia in a friendly match.
Considered a Botev Plovdiv legend, where he spent the vast majority of his playing career, Hvoynev also represented Loko Sofia, CSKA Sofia and Maritsa Plovdiv. Outside of Bulgaria, he donned the shirt of Alki (Cyprus) and La Valletta (Malta), becoming champion with the latter. In 2005, Hvoynev relocated to Baltimore, United States, where he has been coaching youth teams.