- See O'Shea for other articles with titles that contain, either by relationship or by coincidence, this character's surname.
Tammy O'Shea was a 23rd century Human woman. In the mid-2260s, O'Shea served in Starfleet as a sciences division officer attached to the astrophysics department aboard the USS Enterprise.
While serving as chief astrophysicist, Lieutenant Hikaru Sulu noted that O'Shea was an experienced science officer who had gained the respect of her colleagues. Upon his reassignment to serve as helmsman in late 2265, Sulu suggested that O'Shea assume his former role, citing her experience. Captain James T. Kirk informed Sulu that he would take the recommendation under advisement. (TOS - My Brother's Keeper novel: Constitution)