Jennifer Lynn Armentrout, also known by the pseudonym J. Lynn, is an American writer of contemporary romance, new adult, and fantasy. Born on June 11, 1980, she has successfully made a name for herself in the literary world, with several of her works appearing on The New York Times Best Seller list.

Jennifer is considered a "hybrid" author, having successfully self-published while maintaining active contracts with small independent presses and traditional publishers. Her current publishers include Spencer Hill Press, Entangled Publishing, Harlequin Teen, Disney/Hyperion, and HarperCollins.

Jennifer resides in Charles Town, West Virginia, where she enjoys reading, watching zombie movies, and spending time with her husband and her Jack Russell, Loki. In early 2015, she was diagnosed with retinitis pigmentosa, a group of rare genetic disorders.