Anna Harriet Heyer (30 August 1909 Little Rock, Arkansas – 12 August 2002 Fort Worth, Texas) was a distinguished American academic music librarian, musicologist, and bibliographer who for 26 years, from 1940 to 1966, headed the Music Library at University of North Texas.

The concept intrigued her because, in her words, "It would give me a chance to be within an interest that I like and still do library work.

[4] When she arrived, North Texas had acquired sizable collections that included orchestral scores, sheet music, phonograph recordings, and the Carnegie Corporation reproducing unit.

[5][6][7][8] While working for North Texas, she earned a Master of Music degree from the University of Michigan in 1943.

[6][7][8] In 1957, Heyer published a groundbreaking bibliography, Historical Sets, Collected Editions, and Monuments of Music: A Guide to their Contents.