Memory Beta, non-canon Star Trek Wiki

A friendly reminder regarding spoilers! At present the expanded Trek universe is in a period of major upheaval with the finale of Year Five, the Coda miniseries and the continuations of Discovery, Picard and Lower Decks; and the premieres of Prodigy and Strange New Worlds, the advent of new eras in Star Trek Online gaming, as well as other post-55th Anniversary publications. Therefore, please be courteous to other users who may not be aware of current developments by using the {{spoiler}}, {{spoilers}} or {{majorspoiler}} tags when adding new information from sources less than six months old. Also, please do not include details in the summary bar when editing pages and do not anticipate making additions relating to sources not yet in release. 'Thank You


Memory Beta, non-canon Star Trek Wiki
See Harriman for other articles with titles that contain, either by relationship or by coincidence, this character's surname.

John Jason "Blackjack" Harriman I was a human Starfleet officer who held the rank of Admiral by the late 2280s decade.


For several years (including 2289 and 2290) he served as the Commander-in-Chief of Starfleet. He had one daughter, Lynn Harriman, and one son, John Jason Harriman II, best known for his tenure as captain of the USS Enterprise-B. Physically speaking, he resembled his son, but had a broader and more rugged appearance. (TOS novel: Excelsior: Forged in Fire, TLE novel: One Constant Star)

Harriman was known as "Jack" since childhood and earned the nickname "Blackjack" while attending Starfleet Academy, in recognition of his skill in card games. (TOS novel: The Captain's Daughter)

Blackjack's father fought in the Earth-Romulan War and often reminded his son that Romulans do not take captives. Years later, Blackjack would tell these stories to his own son, passing down an interest in Romulan history and culture as a result. (TLE novel: Serpents Among the Ruins)

Blackjack held the rank of ensign on the USS Allegiance when the ship visited Alonis. It was here that he met Los Tirasol Mentir for the first time, and over the years they two would develop a close friendship. Later when Blackjack had earned the rank of Captain, he sponsored Mentir's application to Starfleet Academy, making Mentir only the second Alonis accepted. Harriman also served at one point on the USS Sea of Tranquility during which time John Jr. was born. (ST - The Lost Era novel: Serpents Among the Ruins)

He had lost his daughter, Lynn, when she was murdered while visiting a border outpost in 2275. (TLE novel: One Constant Star)

Blackjack was often accused of wearing his son's career as a medal. He openly admitted using his influence in order to guide his son's career, including his assignment as commander of the Enterprise-B. Already strained, their relationship came to a breaking point when the Enterprise was assigned to enforce a quarantine on Askalon V. The senior Harriman had ordered weapons fire against the USS Excelsior for violating that quarantine, and his son refused, instead relieving the admiral and having him beamed from the bridge to the brig. Thereafter, father and son communicated only in their official capacities. (TOS novel: The Captain's Daughter; ST - The Lost Era novel: Serpents Among the Ruins)

In 2311, Blackjack was observing the USS Universe trials from the USS Ad Astra. When the testbed exploded, the force sent Blackjack flying into a bulkhead causing subdural hematomata. Blackjack was critically injured and died a few weeks later, refusing to see his son for the duration of that time and still referring to him as weak, undisciplined, and ungrateful. Hoping to give Blackjack's son a bit of peace, Demora Sulu told the younger Harriman that his father said that he loved him shortly before dying. (ST - The Lost Era novel: Serpents Among the Ruins)


Commanders-in-Chief of the Federation Starfleet
Emblem of the United Federation of Planets icon image. Chinua AbuteVoyseyBull BuchinskyStephen TurnerJohn "Blackjack" HarrimanWilliam SmillieAndrovar DrakeMargaret Sinclair-AlexanderPavel ChekovTaela ShanthiEdward JellicoLeonard James AkaarVictor BordsonKirsten ClancyJorel QuinnCharles Vance Seal of the Federation Starfleet icon image.