| Name |
Description |
| Illyrian [1] |
Alpha quadrant species who specialised in adapting their bodies using genetic engineering to better fit into their surroundings, rather than altering their suroundings to suit them. [1] |
| Iconian [2] |
Ancient and highly advanced species now extinct [2] |
| Immunocytic Gel Worm [3] |
Animal used by Dr. Phlox. [3] |
| Ilidarian [4] |
Delta Quadrant civilisation [4] |
| Imhotep [5] |
Delta quadrant society who took part in a regular sub-warp shuttle race [5] |
| Iotian [6] |
Highly imitative species who based their lives on earth gangsters after a visit from a federation starship. [6] |
| Ithenite [7] |
Humanoid species, recognisable for their diminutive stature and copper coloured skin. A pair of Ithenite diplomats travelled to the planet Babel aboard the USS Enterprise in 2267 in order to debate the admission of Coridan to the Federation. [8]
The Ithenites remained Federation members in 2554, in the future shown to Captain Archer by Daniels. They were part of the war against the Sphere Builders in this time. [9] |
| Idanian [10] |
Odo once became romantically involved with an Idanian secret operative. [10] |
| Interphasic Organism [11] |
Parasitical life forms which infested the Enterprise D [11] |
| Illyrian [12] |
Species native to the Delphic Expanse. Archer raided an Illyrian ship in 2153 in order to steal a warp coil to repair Enterprise's drive, leaving them with a three year trip home. [12] |
| Ice Bore [13] |
Species of worm which lives on Andoria. Ice bores tunnel through the ice by generating very high temperatures; it can be very dangerous to encounter a swarm of them unexpectedly. [13] |
| Ikaaran [14] |
Species to be found in the Delphic Expanse in the 21st/22nd century. [14]
|
| Iothra [15] |
Species which breathes hydrogen [15] |
| Iyaaran [16] |
Species which visited the Enterprise-D in 2370. The Iyaarans had no concepts of crime, pleasure, antagonism or love and used their visit to try and provoke some of these in the Enterprise crew. Iyaarans reproduce by post-cellular compounding, and emerge from the natal pod fully grown. There are therefore no children in their species. [16] |
| Iguana [17] |
Terran reptile. [17] A member of the USS Enterprise crew was turned into an Iguana by Charlie in in 2266. [18] They where later turned back to human form by Charlies adoptive parents. |
| Imaginary Species [19] |
This species formed part of the delusion Hoshi Sato underwent in 2152 whilst transporting to the NX-01. In the delusion, the species was a hostile race intent on destroying the ship. [19] |
| Ilari [20] |
Voyager became involved in an Ilari civil war when the leader of a dissident faction transferred his personality into the body of Kes. [20] |
