Deirdre "Dede" Demet Barry (born October 8, 1972 in Milwaukee, Wisconsin) is an American female cycle racer, six times U.S. champion (4 senior titles, two junior).

Her coach suggested she take up speed skating, which she did, swayed by watching Eric and Beth Heiden in the world championships in her home town of Milwaukee.

Other American cyclists who excelled in both sports include Eric and Beth Heiden, Chris Witty, Connie Carpenter-Phinney and Erin Mirabella.

Picked for the U.S. Olympic team after accumulating more UCI points than other riders, she came second in the individual time trial event.

She currently co-leads Mariposa Bicycles with her husband, Michael Barry in Toronto, Canada.