Click Here for Complete Allergen Information From Their Site

Here is what Arby's lists as items that don't contain gluten:

Salads & Dressings
Chopped Italian Salad
Chopped Turkey Club Salad
Balsalmic Vinaigrette Dressing
Dijon Honey Mustard Dressing

Dessert Drinks
Chocolate Swirl Shake
Jomocha Swirl Shake
Vanilla Shake
Chocolate Malt Swirl Shake
TJ Cinnamon's Mocha Chill

Side Dish
Potato Cakes
(They are listed as gluten free on their site, but they also appear to be fried. Without a gf dedicated fryer the food would then have gluten on it due to cross contamination)