Sarah B. Askew (1863-1942) was a prominent American librarian during the first half of the 20th century, working for (and eventually leading) the New Jersey Public Library Commission for 37 years.
The New Jersey Public Library Commission hired Askew on January 1, 1905, assigning her to travel among the state's libraries to introduce them to modern library practice and to set up a summer training program for New Jersey librarians. Askew worked for the commission until her death.
Askew resided in Trenton, New Jersey.
In 1951, Library Journal named Askew to its Library Hall of Fame. The New Jersey Library Association awards an annual scholarship in Askew's honor.