The yogurt shop 16 Handles indicates its vegan offerings with a vegan icon. See:
http://16handles.com/flavors/?yogurt#
Locations are at: http://16handles.com/locations/

Here are ingredients for YoSoy Chocolate marked as vegan:
Water, Sugar, Corn Syrup Solids,
Coconut Oil, Cocoa Processed with Alkali,
Maltodextrin, Soy Protein Isolate, Vegetable
Stabilizer (Mono & Diglcerides, Cellulose Gel,
Cellulose Gum Locust Bean Gum, Carrageenan),
Tahitian Vanilla

and
Superfruit Acai:
Sugar, Açai, Raspberries,
Blackberries, Strawberries, Fruit Juice, Vegetable
Stabilizer.

The contents of this website and our other publications, including Vegetarian Journal, are not intended to provide personal medical advice. Medical advice should be obtained from a qualified health professional. We often depend on product and ingredient information from company statements. It is impossible to be 100% sure about a statement, info can change, people have different views, and mistakes can be made. Please use your best judgment about whether a product is suitable for you. To be sure, do further research or confirmation on your own.

For information on more chains, see http://www.vrg.org/fastfoodinfo.php

For information on vegetarian and vegan restaurants, see http://www.vrg.org/restaurant/index.php