In Greek mythology, Thelxion is the name of two Greek mythological figures associated with a king named Apis. These two figures may be indistinct. One is Apis's son and the fifth king of Sicyon, mentioned by the travel writer Pausanias. The other is the murderer of Apis who is later killed by Argus Panoptes, as told by the mythographer Apollodorus.
- Position held
- king of Sicyon
