Nicola Ghiuselev (Bulgarian: Никола Гюзелев) (also Gyuzelev; 17 August 1936 – 16 May 2014) was a Bulgarian operatic bass, particularly associated with the Italian and Russian repertories. Ghiuselev was born in Pavlikeni. He studied painting at the Academy of Arts in Sofia, and later voice at the school of the National Opera of Sofia, with Christo Brambarov. He made his stage debut with that company, as Timur in Turandot, in 1960. In 1965, with the Sofia Opera, he toured Germany, the Netherlands and France, and made his debut at the Metropolitan Opera of New York, as Ramfis in Aida, quickly followed by King Philip II in Don Carlo, and the title role in Boris Godunov. In two seasons with the Met, he sang as Raimondo in Lucia di Lammermoor, the Commendatore in Don Giovanni, Colline in La bohème.