Abby Hanlon is the author and illustrator of Dory Fantasmagory, a series of six chapter books for five to nine year olds, published by Dial/Penguin Random House. The first book in the series was named a Best Book of the Year by Kirkus, Publishers Weekly, and Parent's Magazine. It won a Golden Kite Honor for Fiction and is an American Library Association Notable Book. The sequel, Dory and The Real True Friend won a 2015 Cybil award. The books have been translated in twenty-four languages and are Junior Library Guild selections.

Abby has a bachelor's from Barnard College and a master's degree in childhood education from the City College of New York. Abby has taught creative writing and first grade in the New York City public school system. Her debut picture book, Ralph Tells a Story (2012), is widely used by elementary school teachers. Abby illustrated the picture book, Chester Van Chime Who Forgot How to Rhyme, written by Avery Monsen (2022). Chester Van Chime is a 2023 Bank Street College Best Books pick and a Good Housekeeping Best Kids’ Books of 2022 selection.

Abby lives in Brooklyn with her husband and her sixteen-year-old twins.