Blagoy Stefanov Shklifov (Bulgarian: Благой Стефанов Шклифов; January 30, 1935 – September 25, 2003) was a Bulgarian dialectologist and phonologist. Shklifov was born in Polykeraso (Chereshnitsa), Vitsi municipality, Kastoria regional unit, Greece in 1935. In his books, he claimed that the Slavophones of Greek Macedonia are Bulgarians. For this reason, he was not permitted to enter Greece for 40 years. He died in September 2003 in a car crash during a field work trip in Greece. Some of his colleagues suspect he was murdered.