Art intervention is an interaction with a previously existing artwork, audience, venue/space or situation. It is in the category of conceptual art and is commonly a form of performance art. It is associated with Letterist International, Situationist International, Viennese Actionists, the Dada movement and Neo-Dadaists. More latterly, intervention art has delivered Guerrilla art, street art plus the Stuckists have made extensive use of it to affect perceptions of artworks they oppose and as a protest against existing interventions.

Conceptual art, also referred to as conceptualism, is art in which the concept(s) or idea(s) involved in the work are prioritized equally to or more than traditional aesthetic, technical, and material concerns. Some works of conceptual art may be constructed by anyone simply by following a set of written instructions. This method was fundamental to American artist Sol LeWitt's definition of conceptual art, one of the first to appear in print:In conceptual art the idea or concept is the most important aspect of the work. When an artist uses a conceptual form of art, it means that all of the planning and decisions are made beforehand and the execution is a perfunctory affair. The idea becomes a machine that makes the art.