Inachus is a figure from Greek mythology, known as a river god and the son of Oceanus and Tethys. He is often associated with the river Inachus in Argolis, Greece, which is named after him. Inachus is considered the father of Io, a mortal woman who was transformed into a cow by Hera due to her affair with Zeus. Inachus is sometimes depicted as a man with flowing water or as a river itself. His story highlights themes of transformation and the complex relationships between gods and mortals in Greek mythology. The river Inachus is significant in the region, symbolizing life and fertility.