See Mitchell for other articles with titles that contain, either by relationship or by coincidence, this character's surname.

Thomas Mitchell was a human male who lived in the 23rd century.

In the early 2230s, Thomas resided in the small town of Eldman, New York City on Earth, where he lived with his wife Dana. In 2234, their only child, Gary Mitchell, was born.

After being informed of his son's death in 2265, Mitchell contacted Captain James T. Kirk aboard the USS Enterprise and informed him that Gary's funeral would take place in New York, and asked that he and his wife be allowed to deliver the eulogy. (TOS - My Brother's Keeper novel: Republic)