Acilius Severus was a Roman consul of the fourth century CE, he served as consul with Vettius Rufinus as his colleague, and served as urban prefect of Rome from January 325 - November 326. By Acilius' name, Severus is related to the gens Acilia which was an ancient Roman family whose descendants are traced into the third century. However, it's not known if he is related to Marcus Acilius Glabrio who was consul in 256 or Manius Acilius Aviola who was consul in 239.

Community content is available under CC-BY-SA unless otherwise noted.