Lawrence Howland Knox (September 30, 1906 – 1966) was among the first African Americans to receive a PhD in chemistry, following his brother William Jacob Knox (1904–1995).
He worked with Paul Doughty Bartlett on an experiment for testing organic mechanisms in chemistry which involved the use of the molecule bicyclo(2.2.1)heptane, a type of bicyclic molecule.
Knox was the grandson of a slave.He was born in New Bedford, Massachusetts, lived for an extended period in Mexico, and died of carbon monoxide poisoning.