Lorser Feitelson (1898–1978) was an artist known as one of the founding fathers of Southern California–based hard-edge painting. Born in Savannah, Georgia, Feitelson was raised in New York City, where his family relocated shortly after his birth. His rise to prominence occurred after he moved to California in 1927.

Hard-edge painting is painting in which abrupt transitions are found between color areas. Color areas often consist of one unvarying color. The Hard-edge painting style is related to Geometric abstraction, Op Art, Post-painterly Abstraction, and Color Field painting.