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