Sarah Longfield is a guitarist from the United States whose work spans progressive and experimental metal, melodic styles, djent and technical guitar playing. Born in 1994, she is based in Madison, Wisconsin and is associated with a number of projects, including The Fine Constant, Dread Machine and Chrome Coda.

Her music is tagged across ambient, djent, instrumental, progressive and progressive metal, reflecting an approach that moves between heavy, intricate guitar work and more atmospheric material. Alongside her solo work, she performs in The Fine Constant.