Julia Brown (died after 1860) was an American madam and prostitute active in mid-nineteenth century New York City.

She also had season ticket to two theaters, paid for pews in various churches and contributed generously to local bible societies.

Brown popularized the brothel ball, which were a risqué masked parties attended by some of New York's elite.

[7] The Dixon's Polyanthos, a weekly with a circulation of around 10,000, carried a story on "Princess Julia's Palace of Love" in June 1841.

Her neighbours included James Lenox, William H. Aspinwall, the socialite Mrs Peter A. Schemerhorn and New York Public Library.

She received invitations to social galas across New York City,[15] and her admirers nicknamed her Princess Julia.