It depends
Not the same thing as maltodextrin, despite how the two look side by side. Maltodextrin is broken down far enough that even a wheat-derived one is exempt from allergen declaration in the EU; plain dextrin is a shorter journey from the starch and is genuinely sometimes made from wheat. On an FDA-regulated label that is fine, because wheat would have to be declared. Away from that guarantee it is a real question, and the answer is not on the packet.
Because the answer depends on the rest of the label, scanning the actual product is the only way to resolve it — CiCi checks for a gluten-free claim, the allergen statement, and which agency regulates that label, then tells you which way it lands.
Point CiCi at the barcode on the product you're holding and get this same reasoning in about two seconds, plus the carbs and the full nutrition panel. 360,000+ packaged foods are already read and waiting.
This answer comes from CiCi's ingredient lexicon — the same rules the scanner uses, not a separate article. Where reputable sources disagree, CiCi takes the conservative position and says so.