Iota

;Astronomical nomenclature
* Iota Centauri, a star system
* Iota Geminorum, a planetary system
** Iota Geminorum IV, a planet
* Iota Pavonis, a star system
* Iota Virginis, a star system
;See also
* Iota (measurement), a metaphorical amount
* Sigma Iotia II, a planet
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