Lucius Cornelius Cinna (c. 100 BC – after 44 BC) was a politician in the Roman Republic. He came from a noble family which had gained prominence during the civil wars of the 80s BC, but lost their political rights for opposing the dictator Sulla. Cinna sought better fortune for himself by joining the failed rebellions of Lepidus and Sertorius in the 70s BC, but was recalled to Rome and granted amnesty with the support of his brother-in-law, Julius Caesar. Cinna remained debarred from public office, however, an impediment only rescinded by Caesar when he crossed the Rubicon and took control of Rome in 49 BC.