Dr. T is a fictional character from the manga and anime series Slam Dunk, serving as a cheerful and knowledgeable alter ego for the series' author. Dr. T is a relatively short individual who typically appears wearing a red basketball cap turned backwards, paired with a matching red basketball jersey and trousers.

The character has a bright and humorous personality, possessing a deep well of knowledge about the sport of basketball. His primary function within the narrative is educational. Dr. T appears during many of Shohoku High's matches and at other key moments to teach the protagonist, Hanamichi Sakuragi, essential basketball skills. He also offers advice, tips, techniques, and general trivia about basketball directly to the audience.

Dr. T’s motivations are rooted in sharing a passion for the game. He acts as a guide and commentator, stepping in, particularly when Sakuragi makes a mistake, to explain how the young player can improve and to break down more complex rules or tactics for the viewer. For example, during a practice match between Shohoku's first and second-year students, Dr. T made his first appearance by sharing an anecdote about the legendary college player Kareem Abdul-Jabbar to illustrate a point about competition and skill.

As the author's self-representation, Dr. T does not have a traditional character development arc within the plot. Instead, his role remains consistent throughout the series as a meta-fictional teacher. His key relationships are primarily with the audience and, to a lesser extent, with Sakuragi as a pupil. In terms of abilities, Dr. T's expertise lies in his comprehensive understanding of basketball, which he presents in an accessible and engaging manner, making minor appearances in many chapters and episodes to serve as a friendly professor of the game.