Who is John Prentice in the film, Guess Who’s Coming to Dinner?

John Prentice is a well-educated black doctor. He has created a program that helps countries in Africa educate people, giving them medical knowledge so people will not die of easily treatable injuries and illnesses. When Matt hears John's list of achievements, he says it is no wonder John doesn't tell anyone about himself-no one would believe him!

Although John tells Joanna that they will be married no matter what, he tells her parents that he will not marry her without their consent. John is considerate of their feelings both for their sake and Joanna's; however, he is also concerned that he could never make up for it if her parents quit speaking to her.