Sara Pennypacker (born 1951) is a New York Times bestselling^[1] American author of children's literature. She has written twenty-one children's books, including Leeva At Last, Pax, Pax Journey Home, Here in the Real World, Summer of the Gypsy Moths, the Clementine series, the Waylon series, and the Stuart books.^[2]

Pax was one of ten books making the longlist for the National Book Award for Young People's Literature in 2016.^[3] It was on The New York Times bestseller list for 54 weeks,^[4] reaching #1.^[5]

She received a Christopher Award for Clementine's Letter and the Golden Kite Award for Pierre In Love.^[6] She received Boston Globe and Horn Book awards for Clementine.^[2]

Clementine,^[7] Clementine and the Family Meeting,^[8] Clementine's Letter,^[9] The Talented Clementine,^[10] Stuart Goes to School,^[11] Pax,^[12] Summer of the Gypsy Moths,^[13] and The Mount Rushmore Calamity^[14] received starred reviews from Kirkus Reviews.

Summer of the Gypsy Moths,^[15] Clementine,^[16] Pax,^[17] Dumbstuck^[18] and Here in the Real World^[19] received starred reviews from Publishers Weekly.

Pax,^[20] Meet the Dullards,^[21] and Summer of the Gypsy Moths^[22] received starred reviews from School Library Journal.

• Pax Journey Home (Balzer + Bray/HarperCollins, 2021). Illustrated by Jon Klassen.^{[12][17][20][23][24]}
• Pax (Balzer + Bray/HarperCollins, 2016). Illustrated by Jon Klassen.^{[12][17][20][25][26]}
• Here in the Real World (Balzer + Bray/HarperCollins, 2020)^{[27][19][28][29]}
• Summer of the Gypsy Moths (Balzer + Bray/HarperCollins, 2012)^[13][15][22]
• Dumbstruck (Holiday House, 1994). Illustrated by Mary Jane Auch.^[30][18]