Catherine "Kate" Klise (born 1963) is an American author. She has authored several humorous children's literature titles in collaboration with her sister, illustrator M. Sarah Klise. Their Regarding series is presented in a scrapbook style format, with letters, journal entries, and related ephemera telling the story.
Kate Klise was the fourth of six children born to educational film producer Thomas and Marjorie Klise. Raised in Peoria, Illinois, she attended Marquette University and has written articles for People magazine. She currently resides near Norwood, Missouri.