Athalia Theophilia Schwartz (22 February 1821 – 2 November 1871), pen name Hieronymus, was a Danish writer, journalist and educator. She was an important female contributor to 19th-century Danish literature, publishing schoolbooks, poetry, drama and short stories. She was employed by Berlingske Tidende as a theatre critic. She also wrote about the conditions and lives of prostitutes in England, the Netherlands and Belgium.