Emma Willard School, originally called Troy Female Seminary and often referred to simply as Emma, is an independent university-preparatory day and boarding school for young women located in Troy, New York. Located on Mount Ida, it offers grades 9–12 and postgraduate coursework.

The first women's higher education institution in the United States, it was founded by women's rights advocate Emma Willard in 1814 (first in Middlebury, Vermont, as Middlebury Female Seminary, later moved to Troy and renamed Troy Female Seminary). As of 2026, it had an endowment of $119 million.In 2018, the school was ranked by The Post-Standard as the #1 private school in Upstate New York.