Iyar was an inhabited planet. This planet was known for its spectacular crystal formations. It was located in the same sector as a class M planet, where the remains of a Terellian freighter had been discovered by the Iyaarans, containing the logs of the Human Anna.

The planet was the homeworld of the Iyaaran species and the planet's government was headed by a premier. (TNG: "Liaisons")

This planet was only mentioned in dialogue.
According to the RPG sourcebook Planets of the UFP, the Iyaaran homeworld is called Iyaar V.
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