Raina Kabaivanska (Bulgarian: Райна Кабаиванска; born Raina Yakimova (Bulgarian: Якимова); born 15 December 1934) is a Bulgarian opera singer, one of the leading lirico-spinto sopranos of her generation, particularly associated with Verdi and Puccini, although she sang a wide range of roles. Born in Burgas, Bulgaria, she studied in Sofia with Prokopova and Yosifov, and made her debut at the Bulgarian National Opera in Sofia as Tatjana in Tchaikovsky's Eugene Onegin in 1957.

The following year, she left for Italy for further studies with Zina Fumagalli-Riva in Milan and with Giulia Tess in Vercelli. Two years later she made a breakthrough in Fano, Italy, as Nedda in Leoncavallo's Pagliacci. In 1961, she gave her first performance at La Scala in Milan, as Agnese in Bellini's Beatrice di Tenda, opposite Dame Joan Sutherland.