Constance Elaine Trimmer Willis, commonly known as Connie Willis, is a renowned American science fiction and fantasy writer, born on December 31, 1945. She is one of the most honored science fiction writers, with eleven Hugo Awards and seven Nebula Awards. Notably, she was inducted into the Science Fiction Hall of Fame in 2009 and named the 28th SFWA Grand Master in 2011.

Her popular works include the Time Travel series, featuring time travel by history students at the future University of Oxford. This series includes the short story "Fire Watch" and novels such as Doomsday Book, To Say Nothing of the Dog, and the two-part novel Blackout/All Clear. These works have garnered several prestigious awards, making her the first author to win Hugo awards for all books in a series.

Willis is celebrated for her engaging prose and relatable characters, often exploring themes like the Black Death and historical events through time travel.

She currently resides in Greeley, Colorado, with her husband, Courtney Willis, a physics professor at the University of Northern Colorado, and their daughter, Cordelia.