- Sylvester Stallone seriously injured a pectoral muscle during his intensive training for Rocky II.
- When Rocky is seen training, he is sparring with a smaller and quicker fighter. The sparring partner is played by real life Champion Roberto Duran.
- This movie is notable for being the first of three Rocky films that Stallone would not only write and star in, but direct as well.
- During the “Beast Aftershave” commercial filming scene, the clapper board reads “Director: John Pleshette”, the real name of the actor playing the director.
- The book that Rocky reads to Adrian is Edgar Rice Burrough’s “The Deputy Sheriff of Comanche County” which was originally published in 1940.