Natalia Leonidovna Troitskaya (Russian: Наталья Леонидовна Троицкая; 1951 – 9 April 2006) was a Russian operatic soprano who had a major international career during the 1980s and early 1990s. She particularly excelled in the operas of Giacomo Puccini and Giuseppe Verdi. Among her signature roles were Tatyana in Pyotr Ilyich Tchaikovsky's Eugene Onegin and the title heroines in Verdi's Aida, Puccini's Manon Lescaut, and Puccini's Tosca. She was a frequent partner of Plácido Domingo during the 1980s and also sang opposite other great artists like Montserrat Caballé, Dmitri Hvorostovsky, and Luciano Pavarotti.