The Monado (English dub: /moˈnɑːdoʊ/) is a mythical sword in Xenoblade Chronicles. The reasons of its existence and powers are the core of the story. It is said to be the weapon used by Bionis in its war with Mechonis.

The Monado is a powerful energy blade that can manipulate the ether around it, and by doing so, change the material and immaterial shape of the world. One's ability to control the Monado depends on the strength of will of its user; most Homs who try to use the sword cannot control it. At the beginning of the game, the Monado cannot harm any of the people of Bionis.

The Monado grants its elected wielder the power of foresight. It is said that this is possible because all of the ether in the world is calculable in its changes. This allows the user to see where every ether particle is, was, and will be.

The Monado emits a particular ether wavelength in its ground state that attracts Telethia. Also, the Monado can be counteracted by opposing particles to that of the Monado.

All of the seers must touch the Monado to receive their divination powers.