Looking over the canned tuna I brought home from BJ's last week: CONTAINS: TUNA, SOY. This isn't just the white can of Solid White Albacore, but even the "charge-you-more-because-it-is-allegedly better" gold can of Prime Fillet. (Canned tuna is the only fish I even occasionally eat.)
Maybe its different contents from different stores, but Bumble Bee Prime Fillet Solid White Albacore in Water, 6-Ounce Cans (Pack of 24): Amazon.com: Grocery & Gourmet Food does *not* list soy! (Mine came from BJ's wholesale club.
I am tempted to order from amazon just to return it if there is soy, since it does not list it as an ingredient. The Corporate website even lists the soy: http://www.bumblebee.com/products/1/...acore-in-water