Lucius Domitius Ahenobarbus was a politician in ancient Rome during the late 2nd and early 1st century BC. He served as praetor in Sicily, probably in 96 BC, shortly after the Second Servile War, when slaves had been forbidden to carry arms. He ordered a slave to be crucified for killing a wild boar with a hunting spear. He was consul in 94 BC. In the civil war between Gaius Marius and Sulla, he took the side of the latter, and was murdered at Rome, on the orders of the younger Marius, by the praetor Damasippus.
He was the son of Gnaeus Domitius Ahenobarbus, and brother of Gnaeus Domitius Ahenobarbus.