Mason Wells (1906–1984) was an American painter known for his contributions to abstract art. Born in Massachusetts and later based in the San Francisco Bay Area, Wells was deeply influenced by the modernist movement, often creating geometric and minimalist compositions. His works are characterized by clean, abstract forms, such as rectangles and vertical lines, with a particular emphasis on color fields and the interplay between positive and negative space.

Wells' use of abstraction was both meticulous and restrained, often involving geometric shapes arranged in rhythmic, harmonious patterns. His style aligns with the broader mid-century abstract movements but stands out due to his subtle use of color and light. He created paintings such as "Red Rectangle and Verticals" (1965), which exemplifies his focus on minimalist structure. His works are part of major collections, including the San Francisco Museum of Modern Art (SFMOMA) and the Whitney Museum of American Art, where his 1966 painting "Damar" is held.

Wells was connected to the West Coast art scene, particularly in the 1960s and 70s, and was influenced by modernist figures like Hans Hofmann, under whom he studied briefly. His paintings, such as "Green, Blue and White" (1963), reflect his precise approach to abstraction, and many of his works have been exhibited and sold in various art auctions.