Radulov (Russian and Bulgarian: Радулов) is a Russian and Bulgarian masculine surname derived from the male given name Radul, its feminine counterpart is Radulova. Notable people with the surname include: Alexander Radulov (born 1986), Russian hockey player. Igor Radulov (born 1982), Russian hockey player. Ivan Radulov (born 1939), Bulgarian chess player. Semen Radulov (born 1989), Ukrainian freestyle wrestler. Troyan Radulov (born 1974), Bulgarian footballer. See also. Radulović, Serbian variant
https://en.wikipedia.org/wiki/Radulov