Alice Mary Barth was an English operatic soprano who for some years was a member of the Carl Rosa Opera Company and who during the 1880s managed her own troupe, the Alice Barth Opera Company.

The Carl Rosa Opera Company was founded in 1873 by Carl Rosa, a German-born musical impresario, and his wife, British operatic soprano Euphrosyne Parepa-Rosa to present opera in English in London and the British provinces. The company premiered many operas in the UK, employing a mix of established opera stars and young singers, reaching new opera audiences with popularly priced tickets. It survived Rosa's death in 1889, and continued to present opera in English on tour until 1960, when it was obliged to close for lack of funds. The company was revived in 1997, presenting mostly lighter operatic works including those by Gilbert and Sullivan. The company "was arguably the most influential opera company ever in the UK".