<<Disclaimer: Verify this information before applying it to your situation.>>

The following Kroger Private Selections brand mustards are gluten free (and delicious!):
Smokey Garlic
Dijon
Dill
Jalapeno Gold
Raspberry Honey
Red Wine
Sweet and Hot Stone Ground
Whole Grain Garlic

Be careful - there are some that are not gluten free, including the obvious Beer, and the less obvious Champagne, as well as the Curry Mustard. Always read the labels - Kroger is striving to change all labels in the near future to highlight potential allergens - they even put in bold letters under cheese ingredients that the product contains dairy! :-)
Kroger is always very willing to check items with their food technologists and they have a good understanding of the meaning of "gluten free", erring on the side of caution when it comes to things like distilled vinegar. They do have a gluten free database which is added to each time someone has an item researched, so, the more folks who call in, the bigger their database will get, a great service to all fellow gluten free citizens.
Hilary

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