Quintus Antistius Adventus (c. 120 AD — after 175 AD) was a Roman politician and general. He commanded a legion, the II Adiutrix in the war against the Parthian Empire (161-166), and was appointed suffect consul around 166. His full name, as attested in two inscriptions from modern Algeria, was Quintus Antistius Adventus Postumius Aquilinus. Olli Salomies opines that his brother was Lucius Antistius Mundicius Burrus, and his nephew was likely Lucius Antistius Burrus, ordinary consul in 181. Where the name elements "Postumus Aquilinus" in Adventus' name came from is something of a mystery: Salomies points out that it is "quite inconceivable that he could have been a Postumus adopted by a Q. Antistius", yet notes it could have come from his mother's side because another inscription attests his mother's name as Antonia Prisca. Career Professor Edward Champlin includes Adventus as a member of "a Cirtan community at Rome" he infers existed there, whose members included: Quintus Lollius Urbicus, consul in either 135 or 136; Gaius Arrius Antoninus, consul c. 170; and the orator Fronto. Champlin notes that Lollius Urbicus and Pactumeius Clemens themselves "could provide powerful support for Cirtan interests, and such support is attested by strong circumstantial evidence." An inscription recovered from Thibilis in Numidia, combined with a second from another Numidian town Cirta, allows us to reconstruct his career from its beginning. Adventus began his career with membership in the , which was the board that oversaw maintenance of the streets and public places in Rome; it was one of the four magistracies that comprised the vigintiviri, and membership in one of these boards was a preliminary and required first step toward a gaining entry into the Roman Senate. Next he was commissioned as the tribunus laticlavius in Legio I Minervia. Upon returning to Rome, he was elected quaestor, and in this office he went to Macedonia to manage its finances. Upon completing this office, Adventus was enrolled into the Senate. Next followed the office of sevir equitum Romanorum or presiding at the annual review of the equites at Rome, then the traditional Republican magistracy of plebeian tribune. Adventus was picked to serve as legatus or assistant to the proconsular governor of Africa, where he was for a year, until returning to Rome once again to hold a third traditional Republican magistracy, praetor. Géza Alföldy dates his praetorship to around 158. After the praetorship Adventus was commissioned