George Lucas - I, II, III, IV, V, VI
------------------------------------------

The ***creator*** of Star Wars has stated that the correct viewing order for the original trilogy and prequel trilogy is **the numbered order, not the release order**.

> *“Start with One. **That’s the way
> to do it right: 1, 2, 3, 4, 5, 6. That’s the way they’re supposed to
> be done.** Just because it took a long time to film it doesn’t mean you
> don’t do it in order.”*
>
> <sub><sup>[The Vulture: In What Order Should You Watch the Star Wars Movies? George Lucas and Others Weigh In][1]</sub></sup>

and

> *"What you've got to remember is that **this is one movie. And it's meant
> to be watched one through six.** So I think when you watch the actual
> movie in order, the story will become very clear."*
>
> <sub><sup>[Featurette: The Chosen One][2]</sub></sup>

https://www.youtube.com/watch?v=UqLsQClut5c&feature=youtu.be&t=1m36s

Mark Hamill 
------------

> "Rogue One comes before four! Yeah, **so you go: one, two, three, Rogue One, four, five, six, seven, eight",** he decided. "I'm guessing."
>
><sup><sub>[Mark Hamill finally settles the Star Wars viewing order debate](http://www.digitalspy.com/movies/star-wars/news/a853624/star-wars-movies-order-mark-hamill-settles-debate/)</sup></sub>


----------

[The Vulture website][1] has also aggregated the suggested viewing orders from a range of other people directly and indirectly involved in the original, prequel and new trilogies:

**Daisy Ridley** - (I, II, III, IV, V, VI):
-----------------------------------------

> "I would say 1, 2, 3, 4, 5, 6,
> because for a young person it's easier to understand the chronology."
> 

**John Boyega** - (No recommendation)
-------------------

> "I would say whatever you want! Watch 3, 6, 2, 1 — do
> whatever you want to do so long as you experience it a very unique way
> and enjoy it."
> 

**Mark Ruffalo** - (IV, V, VI, I, II, III)
----------------------------------------

> "From the first one made to the
> most recent. Straight through. They just build up nicely that way.
> That’s the way I saw it, and I’m a little bit of a throwback."

**Aaron Paul** - (IV, V, VI, I, II, III)
--------------------------------------

> "You start with the original Star
> Wars movie. There is no other way. Maybe it’s nostalgia. Or maybe it’s
> not even that. I have no idea why I feel this way, but you should
> watch them in the order they were released."

They also offered the advice of a professional movie critic

Matt Zoller Seitz - (IV, V, I, II, III, VI)
-------------------------------------------

> "The Godfather,
> Part II order. This is the order my wife came up with back in 2005. We
> were discussing the right order in which to show the movies to our
> kids, and we agreed that Darth Vader's reveal was such a big deal that
> it would be a shame to ruin it by showing the episodes in numerical
> order. She was a big fan of The Godfather, Part II, which flashes back
> and forth between Michael Corleone in 1959 and his father Vito as a
> young man in the late 19th and early 20th centuries."
> 
> "In this order, you start with A New Hope and continue through Empire,
> which of course ends with Vader dropping that huge plot bomb on Luke.
> Then you "flash back" to The Phantom Menace, Attack of the Clones, and
> then Revenge of the Sith to show how Anakin became Darth Vader. Then
> you finish with Return of the Jedi, where Luke tries to pull his
> father back from the Dark Side and at least partially redeem him,
> restoring balance to the Force in the process. We actually watched the
> films this way, and it really worked.
> 
> "Not only did it magnify the impact of the throne-room scenes in Jedi,
> it made it much easier to see the mirroring games that George Lucas
> was playing in the prequels, making The Phantom Menace a rhyme of A
> New Hope, The Empire Strikes Back with Attack of the Clones (right
> down to the sad cliff-hanger ending), and Jedi the answer to Sith,
> following right on its armored heels."


  [1]: http://www.vulture.com/2015/12/best-star-wars-movie-viewing-order.html?mid=facebook_nymag
  [2]: http://www.imdb.com/title/tt0499191/