Lilian Sukis (born 29 June 1939, Kaunas) is a Canadian operatic soprano of Lithuanian birth.
Her family moved first to Germany during World War II, and then to Canada in 1950.
She earned a BA from McMaster University and a diploma from the University of Toronto, and made her professional opera debut in 1964 as Kate Pinkerton in Giacomo Puccini's Madama Butterfly with the Canadian Opera Company.
In 1965 she sang the role of Countess Almaviva in Wolfgang Amadeus Mozart's The Marriage of Figaro at the Stratford Festival.
That same year she became a pupil at the Metropolitan Opera Studio and School.