Simmons University is a private university in Boston, Massachusetts. It was established in 1899 by clothing manufacturer John Simmons. In 2018, it reorganized its structure and changed its name to a university. Its undergraduate program is women-focused while its graduate programs are co-educational.

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.