Laddie John Dill (b. 1943) is an American artist based in Venice, California, and a pioneering figure in the Southern California Light and Space movement. Working with materials such as glass, sand, concrete, metal, minerals, and illuminated gases, Dill creates sculptures and immersive installations that explore the relationship between light, color, space, and perception. His signature light works, which he has described as “light sentences,” use glowing tubes filled with neon, argon, and mercury to transform their surrounding environments. After earning his BFA from Chouinard Art Institute in 1968, Dill worked alongside influential artists including Robert Rauschenberg, Jasper Johns, Roy Lichtenstein, and Claes Oldenburg. His work has been exhibited internationally since his first solo presentation at Sonnabend Gallery in New York in 1971. Through his innovative use of industrial and elemental materials, Dill creates atmospheric experiences that invite viewers to reconsider how light shapes space, emotion, and time.