Well, since you asked...
no, it is not.
You see, the words
"Marvel Cinematic Universe" (or
"MCU") refer very specifically to the interconnected series of films, short films, T.V. shows, Netflix shows, tie-in comics, and soon-to-be animated series which are all intentionally meant to
quite intricately co-exist within the same
, single overall narrative "universe."
Y'know, all the stuff that's wrapped-up in the various "phases" culminating in a new
Avengers film every few years.
Such as the
Iron Man,
Captain America,
Incredible Hulk and
Thor films, as well as
Guardians of the Galaxy,
Ant-Man,
Dr. Strange,
Black Panther,
Captain Marvel, and
Inhumans in the next few years, for example.
Also included in the MCU is "Marvel's Agents of S.H.I.E.L.D." and "Agent Carter" on network T.V. and "Daredevil" and "A.K.A. Jessica Jones" on Netflix.
Soon enough we'll even have
Spider-Man films included within the official MCU canon!!!
\o/
However, all
previous Spider-Man/Spiderman movies have
nothing to do with the MCU. Same goes for all Fantastic Four movies, X-Men movies, Deadpool, all 3 Punisher films, all Hulk TV shows, TV movies, and the Ang Lee film. Not to mention older, random stuff like "Generation X," "Nick Fury: Agent of S.H.I.E.L.D.," all Marvel animated shows and movies (to date), Spider-Man's appearances on "The Electric Company," etc.
It's pretty straightforward, despite all the confusion and befuddlement among laymen.
I hope that helped sort things out for everyone.