| Jack Mason | |
| Full name: | Jack Mason |
| Nickname(s): | Jack |
| Species: | Human |
| Gender: | Male |
| Eye color: | brown |
| Hair color: | brown |
| Homeworld: | Earth |
| Birthplace: | Seymour, Tennessee Earth |
| Born: | May 12th, 2235 |
| Affiliation: | Federation, Starfleet |
| Family | |
| Mother: | Natalie Mason |
| Father: | Brandon Mason |
| Sibling(s): | Derek Mason (brother) |
| Marital Status: | Married |
| Spouse(s): | Stephanie Williams (m. 2250) |
| Other relatives: | Amaira Kaur (ex-sister in law) |
| Career | |
| Occupation: | Starfleet officer |
| Previous Assignment: | Junior officer USS Johnson (2253-2256) Security officer, USS Kerla (2256-2258) Assistant tactical officer, USS Yorktown (2258-2260) Security officer, Starbase 12 (2260-2264) Security officer, Outpost 12 (2264-2268) |
| Assignment: | Chief of security/tactical officer, USS Enterprise (2269-present) |
| Rank: | Lieutenant |
| Insignia: | 
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Jack Mason is a Human male who lives in the 23rd century and services the Federation, Starfleet as chief of security and tactical officer aboard the Constitution-class USS Enterprise under the command of Captain John Branson. (Star Trek: The New Voyages)