Rosemary Barnsdall Blackmon (September 26, 1921 – October 9, 1983) was an American writer and magazine editor.

She graduated from Hamburg High School in 1939, and from Barnard College[2] in 1943, where she majored in Latin and Greek, and was the president of the Classical Club.

"[3] She collaborated with photographer Irving Penn and publisher Alexander Liberman on Moments Preserved (1960).

[8][9] Blackmon was managing editor of Vogue from 1962 to 1973, and wrote regularly for the magazine for a longer period,[10][11] with titles like "I Went to the Fair" (1958), about the Expo 58 in Brussels,[12] "The Maugham Explosion at Sotheby's" (1962),[13] "New Japan" (1964),[14][15] and "What Can Hypnosis Do for You" (1969).

[16] William Safire suggested Blackmon may have coined the phrase "beautiful people" at Vogue.