Acidinus was a cognomen, or distinguishing family name, of the gens Manlia in ancient Rome. Some notable Acidini include:
Lucius Manlius Acidinus, praetor urbanus in 210 BC, and proconsul of Hispania in 206 BC
Lucius Manlius Acidinus Fulvianus, appointed praetor in 188 BC and had the province of Hispania Citerior allotted to him. Founded the colony of Aquileia
Lucius Manlius (Acidinus), quaestor in 168 BC
Acidinus, a contemporary of Cicero's This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "article name needed". Dictionary of Greek and Roman Biography and Mythology.