Alicia Nash, Salvadoran-American physicist and engineer (b. 1933)
Alicia Esther Nash (née Lardé Lopez-Harrison; January 1, 1933 – May 23, 2015) was a Salvadoran-American physicist. The wife of mathematician John Forbes Nash Jr., she was a mental-health care advocate, who gave up her professional aspirations to support her husband and son who were both diagnosed with schizophrenia.

Her life with Nash was chronicled in the 1998 book, A Beautiful Mind by Sylvia Nasar, as well as in the 2001 film of the same title directed by Ron Howard, in which she was portrayed by Jennifer Connelly.