Nina Ansary (Persian: نینا انصاری ‎‎) (born 1966, Tehran, Iran), is an Iranian–American historian and author best known for her work on women's equity in Iran. Ansary's research has notably countered conventional assumptions of the progress of women in Iran while continuing to advocate for full emancipation. In 2015, Women's eNews recognized Ansary as one of "21 leaders of the 21st century."