Emma Beckwith (December 4, 1849 – November 25, 1919) was an American suffragette, bookkeeper, optician, and inventor. Beckwith held various jobs. She was the first woman in business in the Maiden Lane, Manhattan neighborhood in the spring of 1878. In the following year, she became a bookkeeper in Nassau Street, Manhattan. Beckwith also worked as a wholesale and retail optician; and she was the inventor of the Excelsior lens drill tor optical work. In 1886 or 1889, she was a candidate of the Equal Rights Party for mayor of Brooklyn.