Muriel Faye Siebert (September 12, 1928 – August 24, 2013) was an American businesswoman who was the first woman to own a seat on the New York Stock Exchange, and the first woman to head one of the NYSE's member firms. She joined the 1,365 male members of the exchange on December 28, 1967. Siebert is sometimes known as the "first woman of finance", despite being preceded in owning a brokerage by Victoria Woodhull.