Lucius Pomponius Flaccus (died 33) was a Roman senator, who held a number of imperial appointments during the reign of Tiberius.
Flaccus made the motion in the Senate that days of public thanksgiving be appointed to commemorate the quashing of this act of treason.
[6] Flaccus outwitted Rhescuporis, king of Thrace, who had slain his nephew Cotys III and seized his lands.
Flaccus convinced Rhescuporis to leave his kingdom and enter Roman territory; there he was surrounded by what was first described to him as an "honor guard", but was soon revealed a detail of soldiers to hold him prisoner.
According to Suetonius, Flaccus and Lucius Calpurnius Piso Caesoninus joined the emperor Tiberius in a combined feast and drinking bout that lasted two entire days and the intervening night.