Year 184 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Pulcher and Licinus (or, less frequently, year 570 Ab urbe condita). The denomination 184 BC for this year has been used since the early medieval period, when the Anno Dominicalendar era became the prevalent method in Europe for naming years.
Cato the Elder, along with his colleague, Lucius Valerius Flaccus, are elected censors in Rome. Already the champion of the ancient, austere Roman way of life, Cato, now inaugurates a puritanical campaign. He aims at preserving the mos majorum ("ancestral custom") and combating all Greek influences, which he believes are undermining the older Roman standards of morality. He passes measures taxing luxury and strictly revises the list of persons eligible for the Senate. Abuses by tax gatherers are brought under control, and public building is promoted as a worthy cause.
The oldest known basilica, the Basilica Porcia, is completed in Rome by Cato the Elder during the time he is censor. The building is used by the Romans for transacting business and disposing of legal matters.