Doctor

Doctor may refer to any of the following characters:

Yu-Gi-Oh!

 * Dr. Kekeru Goyu: A doctor from the first series anime, who does not take proper care of his patients or staff below him.
 * Dr. Richard Goat: A surgeon, who competed the Grand Championship.

Yu-Gi-Oh! GX

 * Dr. Vellian Crowler: Head professor and department chair of techniques at Duel Academy. He is known as Cronos de Medici in the Japanese version.
 * Dr. Eisenstein': A medical doctor with, who specializes in duel physics. He is known as Dr. Albert Zweinstein in the Japanese version.
 * Doctor Collector: A highly intelligent Pro League duelist.

Yu-Gi-Oh! 5D's

 * Dr. Fudo: A developer at M.I.D.S and Yusei Fudo's father.
 * Mrs. Fudo: Yusei Fudo's mother, who is also a doctor.
 * Dr. Schmidt: A doctor, who works with Martha.
 * Doctor (Puzzle Hospital): A doctor at Puzzle Hospital.