The cult statue of Apollo Delios, also known as Apollo of Delos, was a revered representation of the Greek god Apollo housed at his sanctuary on the island of Delos, one of the most sacred sites in the ancient Greek world. According to myth, Delos was the birthplace of Apollo and his twin sister Artemis, making it a major religious center for the worship of Apollo from at least the 9th century BCE onward. The cult statue served as the focal point of worship and played a central role in the rituals and festivals dedicated to the god, particularly the Delia festival, which celebrated Apollo with processions, music, athletic competitions, and sacrifices.

The original cult statue of Apollo on Delos is believed to have been an early wooden xoanon—a primitive, often aniconic or semi-figurative representation—typical of early Greek religious practices. Over time, this would likely have been replaced or supplemented by more elaborate and realistic statues crafted from marble or bronze. Although no definitive example of the original cult statue survives, literary references and archaeological remains suggest it was situated within the Temple of Apollo on Delos, a structure that underwent multiple phases of reconstruction and embellishment from the Archaic through the Hellenistic periods.

The significance of the cult statue extended beyond its religious function. As a symbol of Apollo’s divine presence, it also reinforced Delos’s role as a pan-Hellenic sanctuary and a political center, particularly under the influence of Athens, which periodically asserted control over the island and used the cult of Apollo to legitimize its authority.