Epithets of Dionysus

thumb|Iacchus (?), with a torch in each hand, on the Ninnion Tablet, 350s BC, [[National Archaeological Museum of Athens 11036.]]

Bromius () in ancient Greece was used as an epithet of Dionysus/Bacchus. It signifies "noisy", "roaring", or "boisterous", from , to roar. According to Richard Buxton, Bromius (Bromios) is another name for a fundamental divine figure that precedes Ouranus and Night in Orphic myth. This alternative view to Hesiod was discovered by a fragmentary papyrus discovered in Derveni, Macedonia (Greece) in 1962, which is referred to as the Derveni papyrus.

In Greek mythology, the name Chthonius or Chthonios (, ) may refer to: