Robert "Tim" Scully (born August 27, 1944) is an American computer engineer, best known in the psychedelic underground for his work in the production of LSD from 1966 to 1969, for which he was indicted in 1973 and convicted in 1974. His best known product, dubbed "Orange Sunshine", was considered the standard for quality LSD in 1969. He was featured in the documentary The Sunshine Makers.