Kathryn Williams (born 15 February 1974, Liverpool, England) is an English singer-songwriter who to date has released 14 studio albums, written & arranged for a multitude of artists, and was nominated for the 2000 Mercury Music Prize.

Williams released her first album, Dog Leap Stairs, on her own Caw Records label in 1999 with a budget of £80. The follow-up, Little Black Numbers, garnered a Mercury Prize nomination in 2000, bringing her to the attention of a wider public.

Williams has collaborated and recorded with artists including Chris Difford, Ted Barnes, Thea Gilmore, John Martyn, Joel Salakula, Tobias Froberg, Ed Harcourt, James Yorkston, Marry Waterson, Boo Hewerdine, and Paul Smith.