Caeso Duilius (fl. c. 336–334 BC) was a Roman general and statesman. As consul in 336 BC, he and his colleague in office, Lucius Papirius Crassus, waged war against the Ausoni and Sidicini. In 334 BC, Duilius was the member of a three-man board to establish a colony at Cales, which Rome had conquered the previous year. Weigel (p. 226) notes that Duilius is the first attested plebeian member of a colonial commission.

References

• Broughton, T. Robert S. (1951). The Magistrates of the Roman Republic Volume I: 509 B.C.–100 B.C. New York: American Philological Association. pp. 139, 141.
• Oakley, S.P. (1998). A Commentary on Livy, Books VI–X, Volume II: Books VII and VIII. Oxford: Clarendon Press. ISBN 0-19-815226-4.
• Weigel, Richard D. (1985). "Roman Colonial Commissioners and Prior Service". Hermes. 113 (2): 224–231. ISSN 0018-0777. JSTOR 4476431.