Sharon Butler is an American artist and arts writer. She is known for teasing out ideas about contemporary abstraction in her art and writing, particularly a style she called "new casualism" in a 2011 essay. Butler uses process as metaphor and has said in artist's talks that she is keenly interested in creating paintings as documentation of her life. In a 2014 review in the Washington Post, art critic Michael Sullivan wrote that Butler "creates sketchy, thinly painted washes that hover between representation and abstraction.Though boasting such mechanistic titles as 'Tower Vents' and 'Turbine Study,' Butler’s dreamlike renderings, which use tape to only suggest the roughest outlines of architectural forms, feel like bittersweet homages to urban decay." Critic Thomas Micchelli proposed that Butler's work shares "Rauschenberg’s dissolution of the barriers between painting and sculpture," particularly where the canvases are "stapled almost willy-nilly to the front of the stretcher bars, which are visible along the edges of some of the works."

Casualism is a 21st-century trend in art which uses color, composition, and balance to produce works with an unusual rather than obviously visually appealing appearance.