Ilyra VI was the inhabited sixth planet of the Ilyra system. This was the homeworld of a native intelligent species.

Prior to stardate 4978. after he stole a starship from the robot planet he was imprisoned on, Harry Mudd found refuge on this planet. According to Harry Mudd, this was a "charming planet" that had an "innocent and friendly populace." While on Ilyra VI, Mudd committed fraud by selling Starfleet Space Academy to its inhabitants. His sale earned him enough credits to get him to Sirius IX. (TAS: "Mudd's Passion")