Kleobis (Cleobis) and Biton is the name of two human brothers in Greek mythology. It is also the name conventionally given to a pair of lifesize Archaic Greek statues, or kouroi, which are now in the Delphi Archaeological Museum, at Delphi Greece. The statues date from about 580 BC and come from Argos in the Peloponnese, although they were found at Delphi.
In Greek mythology, Kleobis and Biton were Argives, the sons of Cydippe, a priestess of Hera. Cydippe was travelling from Argos to a festival in honor of Argive Hera. The oxen which were to pull her cart were overdue and her sons, Kleobis and Biton, pulled the cart the entire way (45 stadia, or 8.3 km/5.1 miles). Cydippe was impressed with their devotion to her and her goddess and she prayed to Hera, asking her to give her children the best gift a god could give to a mortal. Hera ordained that the brothers would die in their sleep, and after the feast the youths lay down in the temple of Hera, slept and never woke. Herodotus, who relates the story, says that the citizens of Argos donated a pair of statues to the sanctuary of Apollo at Delphi.
Inscriptions on the base of the statues identify them as Kleobis and Biton, and also identify Polymides of Argos as the sculptor: something which was very unusual at such an early date. The statues are in what is regarded as a typical Peloponnesian style: massive and muscular. But they are not intended to be lifelike representations of Kleobis and Biton, even assuming the brothers were historical rather than mythical figures. The statues are ideal representations of the virtues of masculine strength and piety.