In the DVD, the Dolby Digital & DTS 5.1 tracks omit a short musical cue of Rocky's theme when the bell rings at the end of the 15th round, which is present in the original mono soundtrack.
Talia Shire's character Adrian becomes Adriana in the Italian version.
A different ending was originally filmed for this movie. In the original ending, Rocky walked out of the ring and met Adrian in the tunnel to the stadium. They walked down the tunnel, hand in hand, and the last shot was from behind of Rocky and Adrian walking down the tunnel. Test audiences said the end was too depressing and it was reshot with Adrian's now classic run to the ring while Rocky screams her name.