Therese Csillag, or Hungarian: '''Teréz Csillag''', '''Csillag Teréz''', born Stern; August 17, 1859 in Duna-Adony - July 9, 1925 in Budapest) was a Hungarian Jewish actress.
For many years she was a popular comedian at the National Theater in Budapest. At the age of 13 she attended the dramatic school in that city.
In 1879 she was engaged at the National Theater, where she played in ingénue rôles up to 1898. Nearly all Hungarian playwrights of her day wrote special rôles for her, among them being Gregor Csiky, in whose plays she always excelled. Since 1899 she was engaged at the Vígszínház in Budapest.
She embraced the Christian faith.