Inez Fabbri (26 January 1831 - 30 August 1909), ne Agnes Schmidt, was an Austrian American soprano, voice teacher and impresaria. She sang in Austria, Germany, England, South America and the Caribbean, making her home in San Francisco where, in the 1870s, she was the most important musical personality and prima donna assoluta of her time, performing in more than 150 concerts and operas from 1872 to 1879, producing operas, and teaching voice to up-and-coming singers.