Valencia, Spain is definitely improving in its efforts to accommodate vegetarians (vegetarianos/as), vegans (veganos/as), and celiacs (celiacos/as) or those who choose a gluten-free diet (sin gluten).
It seems that every time we go out we are lucky enough to discover new places with vegan and gluten-free options. When traveling or living in Spain, be very cautious when ordering. Many spaniards have a different view of vegetarian and vegan than in other parts of the world and often assume that you will still eat seafood, cheese, and/or eggs. It is typical to find tuna (atún) on most vegetarian sandwiches and salads. In my experience, it is best to list all of the ingredients you DO NOT want in your meal.
Here are a few translated words and phrases, related to vegetarianism, to help you out.