Barbara Nicolette Breit (December 30, 1937 – July 20, 2022)[1] was an American tennis player of the 1950s.

Breit, eldest of three sisters, was born to German emigrant parents in New York City and raised in Los Angeles.

While still a schoolgirl, Breit upset third-seeded Beverly Baker Fleitz in the quarter-finals of the 1955 U.S. National Championships, before losing her semi-final match to Patricia Ward.

She is still the youngest player ever to get the top seed in women's singles in Cincinnati.

She reached the semifinals that year before falling to unseeded and fellow Californian Mimi Arnold.