Catharine is a feminine given name, a variation of Katherine or Catherine. Notable people with the name include:
In education:
Catharine Beecher, noted educator
Catharine Paine Blaine, American teacher and suffragist
Catharine MacKinnon, American feminist, scholar, lawyer, teacher, and activist
Catharine Merrill, one of the first female university professors in the United States
In literature:
Catharine Webb Barber (1823-?), American newspaper editor, author
Catharine Carver (1921–1997), American-British publisher's editor
Catharine H. Esling (1812–1897), American writer
Catharine Hitchcock Tilden Avery, 1844–1911), American author, editor, educator
Catharine Trotter Cockburn, 1679–1749), English novelist, dramatist, philosopher
Catharine Sedgwick, American novelist
In science:
Catharine Cox, American psychologist known for her work on intelligence and genius
Catharine Garmany, astronomer
In rulers:
Catherine the Great, Empress of Russia from 1762 till 1796 known as the country's longest-ruling female.
Other:
Catharine (Tennessee), an enslaved American mother born about 1835