Csillag Róza (Rózsa Csillag), also German: Rosa Csillag, Rose (Rosa) Her(r)mann(-)Csillag, Rosa Her(r)mann (Hungarian: Csillag Róza, exactly Rosa Goldstein, Hungarian: Goldstein Róza, 23 October 1832 - 20 February 1892), was a Hungarian female Jewish opera singer.
She was born in the Jewish community of Irsa (Alberti, now Albertirsa), Pest-Pilis-Solt-Kiskun County, Hungary, and her father was Moritz Goldstein, a chazzan of Irsa. She attracted much attention in the chorus of the Hungarian National Theatre at Budapest.
Trained by Professor Proch, she made her first appearance in 1858 as Fidès in Meyerbeer's Le prophète, in the court opera-house of Vienna, where she delighted her audiences with her beautiful mezzo-soprano voice.
Until 1873 Csillag belonged to the cast of the Vienna Royal Opera House, and was a general favorite. On her tours also she met with much success.
She married the celebrated prestidigitator Carl "Compars" Hermann (also Hermann; born January 23, 1816, north Germany - June 8, 1887) in 1852. The opera singer and actress Blanche Correlli was their daughter.
When her voice began to fail she became singing teacher at the Vienna Conservatoire. She died in Vienna, Austria.