Frances Ellen Work (1857-1947) was an American heiress and a great-grandmother of Diana, Princess of Wales.

Born in Ohio, she was a daughter of Franklin H. Work , a well-known New York stockbroker, and his wife, Ellen Wood.

In 1880, Frances Work married the Hon. James Boothby Burke Roche, who would become the 3rd Baron Fermoy . They divorced in 1891 and had four children: two daughters, Cynthia and Eileen, and twin sons, Edmund (4th Baron Fermoy , grandfather to Diana, Princess of Wales), and Francis. The couple divorced in 1891, before Burke Roche succeeded to the barony.

In 1905, the Hon. Mrs. Burke Roche married Aurel Batonyi, a Hungarian-born groom and horse trainer. (When he immigrated to the United States in 1891, Batonyi claimed to be a count.) However, they soon divorced.

One of Frances Work's great-great-grandchildren is the American actor Oliver Platt.