Year 187 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Lepidus and Flaminius (or, less frequently, year 567 Ab urbe condita). The denomination 187 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.
Tiberius Gracchus Major is elected tribune of the plebs, in which capacity he is recorded as having saved Publius Cornelius Scipio Africanus Major from prosecution by interposing his veto. Tiberius is no friend nor political ally of Scipio's, but feels that the general's services to Rome merit his release from the threat of trial like any common criminal. Supposedly, in gratitude for this action, Scipio betrothes his youngest daughter, Cornelia, to him.