Lucie Armstrong, (née Cobbe; 1851 – 2 May 1907) also known as Lucie Heaton Armstrong, was an English-Irish journalist and writer on etiquette. Armstrong had her first work—The Ball-Room Guide—published anonymously in 1880; this was followed by stories for children published in Little Folks magazine; these were then collected in book form in 1883 under the title Doll Stories. She published in several journals, magazines and newspapers, often anonymously or under pseudonyms, and published nine books, eight of which were on etiquette.