Publius Galerius Trachalus was a Roman senator, who was active during the middle of the first century AD. He was consul for the year 68 as the colleague of Silius Italicus. Trachalus was a noted Roman orator praised by Quintilian. Hailing from Ariminum, Trachalus is thought to possibly be a descendant of the equites Gaius Galerius, praefectus or governor of Egypt (AD 16-23). He was also likely related to Galeria Fundana, the second wife of Otho. It is unknown whether Trachalus had any children or if he was married.