Rebecca Caudill Ayars (February 2, 1899 – October 2, 1985) was an American writer of children's literature with more than twenty books published. Her Tree of Freedom (Viking, 1949) was a Newbery Honor Book in 1950. A Pocketful of Cricket (Holt, 1964), illustrated by Evaline Ness, was a Caldecott Honor Book.