Hettie Belle Ege (March 31, 1861 – November 19, 1942) was an American professor of mathematics.

Her parents were both from Pennsylvania; her father died the year she was born, and her mother remarried in 1869.

"[8] In 1918, she chaperoned a unit of 28 Mills students in the Woman's Land Army, providing ranch labor during wartime shortages.

[10][11] At the festivities marking the school's founder's centennial in 1925, Ege received an honorary doctorate.

[14] She was a regular guest at Mills College events[15] and alumnae gatherings: in 1933 she was honored as the college's dean emerita, alongside president Aurelia Henry Reinhardt and physician Mariana Bertola, at an annual breakfast of the Mills Club of San Francisco.