bio&bio

The location at Tommy Centar is right. The store is quite small and with a poor choice of items : no bread nor eggs, a few fruits, no crackers... Since it seems to be the only store in Dubrovnik, it's a place to go, but don't expect too much of it.

For those who, like me, are trying to find this place with a maps app, don't bother, at least not until HappyCow updates the location marker on the map. I couldn't find it, so I'm not able to send HC the correct GPS coordinates, but maybe a future HC user will.

That said, i've been to 2 other bio and bio locations and it's a great organic chain with numerous vegan items.

Take bus 6 (or others) four stops from Pile Gate to the stop in front of the Tommy store. Just opposite the door into Tommy is Bio&Bio. Buy bus ticket in advance at ticket office at Pile Gate stop for 12kn, which is good for all travel within one hour. It's a one-way street, so when finished at the shop, cross street, walk around through the gas station and cross street to bus stop heading back to Pile.
Shop has a good array of products, a few frozen items, a refrigerated section, packaged grains, etc. Jars, bottles, snack bars, corn chips, rice cakes, juice, alternative milks. I bought some nice hummus made with pumpkin oil.
This store seems to be unique in Dubrovnik. Let's support it!

It's really hard to eat in Dubrovnik if you are vegan so going shopping to that store is quite a good option.
The shop is small but you can find everything you need to make a good vegetarian/vegan meal: tofu, pâtés, lots of different seitan "meat".
Take bus lign n°6 from Pile to go there (approx. 10 minutes)

If you are vacationing in Dubrovnik for a few days you are better off cooking your own food. Forget eating out; it is expensive and most menus choices end with weak appetizers. Bio&Bio really saves the day. This place is as good as any health food market in the States.