Cynthia "Cyndie" Anne Maryanoff (née Milewski; born November 27, 1949) is an American organic and materials chemist.

Among other awards, she received the 2015 Perkin Medal for outstanding work in applied chemistry in the U.S.A. Cynthia Anne Milewski was born on November 27, 1949, in Shenandoah, Pennsylvania.

[8][9] Maryanoff emphasizes that accomplishments in process chemistry depend upon the work of teams of people who are involved in the research.

[4] She has also worked on the transdermal delivery of narcotics, pulmonary surfactants, endocrine function, and Cordis drug-eluting stents.

[8] She has been active in the American Chemical Society (ACS) in many positions including national election to the Executive Committee of the Division of Organic Chemistry (DOC) (1988–2018).

[13] As well as the ACS, she has been active on the NSF Postdoctoral Research Fellowship Review Panel, the NIH Division of Grants, and the NCI Committee for Proposals to Synthesize Pharmaceutical Agents.