Sayra I. Fischer Lebenthal (October 17, 1898 – March 18, 1994) was a municipal bond dealer/broker and investment banker in New York City. In 1925, at the age of 27, she co-founded municipal bond brokerage firm Lebenthal & Company in Manhattan (New York City) with her husband Louis Solomon Lebenthal. The Lebenthals were responsible for "democratizing" the municipal bond business, which had long been almost the exclusive province of the rich and of institutional investors such as insurance companies. Sayra continued to work full time in the business until retiring in 1992 at the age of 93. After Louis’ death in 1951, Sayra became the first woman to run a Wall Street brokerage firm. Among her innovations was organizing a department exclusively for women investors.