Margaret Hilary Millington (March 22, 1944 – March 1973) was an English-born mathematician. She was born Margaret Hilary Ashworth in Halifax, Yorkshire, the daughter of the local assistant head postmaster, and was educated there. She continued her studies at St Mary's College, Durham and went on to Oxford University, where she earned a PhD in 1968 with A. O. L. Atkin as her advisor. Also, in 1968, she married Lieutenant A.H. Millington. She was awarded a two-year Science Research Council Fellowship which allowed her to pursue research at any university. During her husband's two-year posting in Germany, she taught mathematics at an Army Education Centre there.