In Greek mythology, Zeus Xenios was the epithet of Zeus as protector of guests and sacred hospitality.
The Greek concept of xenia governed the relationship between hosts and visitors. It required a host to offer food, shelter, and protection, while guests were expected to behave respectfully and avoid abusing the welcome. Zeus Xenios watched over this reciprocal obligation, making hospitality a religious as well as social duty.
Myths use violations of xenia to explain major conflicts. Paris’s reception in Sparta and his taking of Helen is often discussed in relation to broken hospitality, while the Odyssey repeatedly tests characters through encounters between hosts and strangers.
Zeus had many epithets because ancient worshipers approached him in different roles. Zeus Olympios emphasized his connection with Olympus, Zeus Soter meant savior, and Zeus Ktesios protected household property. These titles should not be treated as separate gods.