Mary Fox may refer to
Mary Fox, Baroness Holland (1746–1778), English noblewomen Lady Mary Fox (1798–1864), English writer, an illegitimate daughter of King William IV of the United Kingdom Mary Fox (artist) (1922–2005), English artist Mary Frank Fox, American academic Marye Anne Fox (1947–2021), American chemist and educator
See also Marie Fox (1850–1878), also known as Mary, French writer and a princess of Liechtenstein Mary Fox-Strangways, Countess of Ilchester 1852–1935, English noblewoman