Love this article “Is Movie Theater Popcorn Gluten-Free?” by Triumph Dining. The short answer is “yes.” We have never had a problem with movie theater popcorn but it is nice to have all the details. Basically it is gluten free but they don’t test it so you never know.
Anonymous - Beware the "butter" topping. I thought all movie popcorn would be gluten free, but tonight I had a reaction and then found this out:
http://thesavvyceliac.com/2010/10/18/movie-theater-popcorn-a-gluten-free-do-or-dont/