| Jack | |
 Jack in 2378 | |
| Full name: | Jack |
| Species: | Hologram (EMH Mark II) |
| Gender: | Male |
| Born: | Originally created as an EMH in 2374 |
| Affiliation: | Federation, Starfleet |
| Career | |
| Occupation: | Medical officer |
| Assignment: | Doctor, USS Intrepid-A (2378-present) |
| Rank: | Inapplicable |
| Insignia: | 
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Jack was an Emergency Medical Hologram Mark II that was programmed by Starfleet in 2375. As of 2378 Jack serves on the USS Intrepid-A as a back up chief medical officer. (Star Trek: Intrepid)