Franny K. Stein is a children's book series by American author Jim Benton.

The series was first published in 2003 with the entry Lunch Walks Among Us by Simon & Schuster.

The Franny K. Stein series follows its titular character Franny, a 7-year-old young girl that's ostracized from her classmates due to her strange behaviors and experiments.

Throughout the series Franny is often called upon to battle various creatures or put into weird situations, sometimes ones that she herself contributed to either accidentally or deliberately.

[5] Publishers Weekly has also given the series a positive rating,[6] calling the first book a "copiously and cartoonishly illustrated novel".