Lightman may refer to:
People Alan Lightman (born 1948), US physicist and writer Gavin Lightman (1939–2020), English judge Harold Lightman (1906–98), English barrister John Lightman, US musician, member of Big Star Stafford Lightman (born 1948), English doctor Toby Lightman (born 1978), US singer-songwriter Sari and Romy Lightman, members of the Canadian band Tasseomancy (band)
Fictional characters Cal Lightman, character in the television series Lie to Me
Films Lightman (film), is a Tamil film from Venkatesh Kumar.G