Jeffe (Jennifer Mize) Kennedy (August 22, 1966) is a noted and notable writer of fantasy and erotic romance. An author of novels, short stories, poetry, and non-fiction, Kennedy has been writing steadily for many years. Her first book was a book of non-fiction essays, Wyoming Trucks, True Love, and The Weather Channel (2004), describing her family, her upbringing, and her life in Wyoming. She has been a Ucross Foundation Fellow, received the Wyoming Arts Council Fellowship for Poetry, and was awarded a Frank Nelson Doubleday Memorial Award.

Her first published work of fiction was the 2010 novel Petals & Thorns, an erotic reworking of the Beauty & The Beast story originally published under the pen name "Jennifer Paris". Since then she has written a number of fantasy romance series, including the Covenant of Thorns trilogy (2012-2014), Sorcerous Moons (2016-), She has also written several series of more conventional romance, including Facets of Passion (2011-2013) , Falling Under (2014-2016), and Missed Connections (2017-) as well as a number of erotic vampire tales.

Kennedy's most famous series is her award-winning fantasy romance trilogy The Twelve Kingdoms, which was published in 2014 and 2015. The series tells the stories of three sisters, Princesses Ursula, Andromeda, and Amelia, who discover romance and adventure while uncovering the secrets of their birth and struggling against their increasingly unstable father King Uorsin. The first book, The Mark of the Tala, received a starred Library Journal review and was nominated for the Romantic Times Book of the Year; its sequel, The Tears of the Rose, received a Top Pick Gold and was nominated for the Romantic Times Reviewers' Choice Best Fantasy Romance of 2014. The third book, The Talon of the Hawk, won that same award for 2015. In 2015, Kennedy began publishing the spinoff Twelve Kingdoms series The Uncharted Realms. The first book, The Pages of the Mind, was nominated for the Romantic Times Reviewer's Choice Best Fantasy Romance of 2016 and won the 2017 RITA Award for Paranormal Romance. The second book in the series, released in late 2016, was The Edge of the Blade. Five additional Forgotten Empires novels followed before Kennedy brought the sweeping Tala saga to a conclusion in February 2020 with the publication of The Fate of the Tala.

She has recently completed a new fantasy series - The Forgotten Empires, which began in 2019 with the publication of The Orchid Throne and continued through The Fiery Crown (2020) and The Promised Queen (2021). A prolific writer, Kennedy has begun several new series: the 4-volume (to date) Heirs of Magic series (2021-2022) and Bonds of Magic (3 books to date, 2021-2022).

Kennedy currently resides in Santa Fe, New Mexico. She served as the President of the Science Fiction and Fantasy Writers Association (SFWA) from 2021-2023.