尼可莱·吉奥罗夫，著名保加利亚歌剧唱家，也是二战以后最著名男低音歌唱家。吉奥罗夫以华丽而有力的声线演绎威尔第的作品而著名，而且经常与夫人米瑞拉·弗蕾妮同台献艺。

Nicolai Ghiaurov (September 13, 1929 – June 2, 2004) was a Bulgarian opera singer and one of the most famous basses of the postwar period. He was admired for his powerful, sumptuous voice, and was particularly associated with roles of Mussorgsky and Verdi. Ghiaurov married the Italian soprano Mirella Freni in 1978, and the two singers frequently performed together. They lived in Modena up until Ghiaurov's death in 2004 of a heart attack.
He made his US debut in Gounod's Faust in 1963 at the Lyric Opera of Chicago, and he went on to sing twelve roles with the company, including the title roles in Boris Godunov, Don Quichotte, and Mefistofele.
Ghiaurov made his Metropolitan Opera debut on 8 November 1965 as Mephistopheles. He sang a total of eighty-one performances in ten roles there, last appearing there on October 26, 1996, as Sparafucile in Rigoletto. During the course of his career, he also performed at Moscow's Bolshoi Theatre, the Vienna State Opera, Covent Garden, and Paris Opéra.