- Spanish dubbed version also refers to Marty as Levi Strauss instead of Calvin Klein.
- The original 2002 DVDs for parts II and III had major framing errors when the wrong areas of the open-matte frame were transferred (known as the "framing fiasco"). This is noticeable for several minutes in each movie and usually manifests as too much sky and missing objects at the bottom. Universal had replacements ready by 2003. A sample from part II is the blinking size button on the future jacket, which is supposed to be visible. Copies with a "V2" next to the copyright notice on the disc, the 2009 single-disc reprint, and the 25th anniversary sets are OK.
- Whenever Marty is knocked out by Biff's friends in the alternate 1985, originally the black screen that was seen before Marty wakes up in is mom's bed was a lot longer. However, starting with the 2010 Blu-ray release and all subsequent editions, it was shortened and as a result the beginning of the music that accompanies that scene is cut off as well.
- During the preview for "Back to the Future Part III", the theatrical version says "Back To The Future Part III - Coming Summer 1990". Some video versions simply say "Back To The Future Part III". The 25th Anniversary Blu-Ray boasts the theatrical preview.
- Unconfirmed: in an airline version, Marty walks up to the Cafe 80's, and sees those little yellow signs like, "Baby on Board," and others that were a fad in the late 80's. He looks at them and says, "Hey, I don't remember these."
- Some UK versions cut down the scene where Biff kicks Marty in the stomach after he gets smashed in the face (by his Part 1 self) by the stage door. The first time he says 'You, steal my stuff?' then kicks him. The second kick 'And this is for my car!' was cut out for TV.
- The following deleted scenes appear on the special edition DVD:
- A brief scene in 2015 in which old Terry reminds old Biff of the car accident involving manure 60 years ago.
- Extended scene in 2015 of older Marty coming home to his family.
- Extended "pizza" scene in 2015 at the McFly's dinner table.
- Jennifer's fainting scene (when she encounters her future self) is briefly extended.
- Old Biff fading out of 2015 after arriving back from 1955.
- In the alternate 1985, Marty discovers the burned down high school.
- Marty meets Dave (played by Marc McClure) on a street in the alternate 1985.
- In the italian dubbed version, when Lorraine meets Biff with her new dress, Marty is referred to as "Levi Strauss" and not "Calvin Klein". This is consistent with BTTF1: in 1985 in Italy CK was not yet so famous as a brand (see also BTTF1 alternates).
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