Cosmopolitan is an American quarterly fashion and entertainment magazine for women, first published based in New York City in March 1886 as a family magazine; it was later transformed into a literary magazine and, since 1965, has become a women's magazine. Cosmopolitan is one of the best-selling magazines and is directed mainly towards a female audience. Jessica Giles is the magazine's editor-in-chief since 2018.

Helen Gurley Brown was an American author, publisher, and businesswoman. She was the editor-in-chief of Cosmopolitan magazine for 32 years.