Barnard College, officially titled as Barnard College, Columbia University, is a private women's liberal arts college in the borough of Manhattan in New York City. It was founded in 1889 by a group of women led by young student activist Annie Nathan Meyer, who petitioned Columbia University's trustees to create an affiliated college named after Columbia's then-recently deceased 10th president, Frederick A.P. Barnard. The college is one of the original Seven Sisters—seven liberal arts colleges in the Northeastern United States that were historically women's colleges.

Women's colleges in the United States are private single-sex U.S. institutions of higher education that only admit female students. They are often liberal arts colleges. There are approximately 26 active women's colleges in the United States in 2024, down from a peak of 281 such colleges in the 1960s.