Barbara Nachtrieb Armstrong (formerly Grimes; August 4, 1890 – January 18, 1976) was a lawyer and law professor in California.
She practiced law and was also executive secretary of the California Social Insurance Commission from 1915 to 1919.
She was appointed to a joint position on the faculty of the school of law and of the department of economics at Berkeley in 1919, the first woman faculty member at a law school approved by the American Bar Association.
She was the first woman to become a full-time faculty member at a major US law school.
She was attacked and severely beaten in 1970, [clarification needed] and suffered from recurrent pain for the next six years.