Mopsus, in ancient Greece, was the name of three mythological figures, and possibly one historic person, including:

Mopsus (son of Manto), son of Manto (daughter of Tiresias) and of either Rhacius of Caria or Apollo Mopsus (Argonaut), son of Ampyx and a nymph

Mopsus may also refer to:

Mopsus (city), or Mopsuestia, an ancient city in Cilicia Campestris Mopsus (spider), an Australian spider genus