Giulia Warwick (1857 – July 13, 1904) was an English operatic soprano and actress, best known for roles in with Richard D'Oyly Carte's and the Carl Rosa Opera Company in the last quarter of the 19th century.
Born Julia Ehrenberg, her stage name came from her birthplace, Warwick Street, in Regent's Park, Camden, London. Her father was a Polish Jew, and she and her two sisters were all interested in music. Warwick originally intended to be a pianist, playing at the Hanover Rooms as early as 1869, when she was only 12 years old, and then at St. George's Hall in 1872. She then studied singing under Sainton Dolby and Maurice Garcia.
In 1876, Warwick joined the Carl Rosa Opera Company and made her operatic debut at the Crystal Palace as Zerlina in Mozart's Don Giovanni, then playing Arline in Michael Balfe's The Bohemian Girl and the title role in Beethoven's Fidelio, and earning good reviews. She also performed in oratorios. Warwick then joined Richard D'Oyly Carte's Comedy Opera Company and created the role of Constance in Gilbert and Sullivan's comic opera, The Sorcerer in 1877, succeeding Alice May in the role of Aline in January 1878. She also played Dora Leslie in Arthur Cecil and Alfred Cellier's companion piece, Dora's Dream. In 1878, she created the part of Lady Viola in James Albery and Cellier's The Spectre Knight, another companion piece.