If you're going for fine dining, People's Palace in Greenbelt has a separate vegetarian menu. Items without eggs or dairy are clearly marked, and you can also veganize the options that do include eggs or dairy. Here are some of my favorites: coconut pomelo salad, yellow vegetable curry, tofu, phad thai (not in picture), mango sticky rice. Lighting isn't great- I could barely see the food myself so forgive the awkward camera angles- but the food is definitely my Thai favorite.
People's Palace is one of the few places (if not the only one) that made the vegan cut. What do I mean exactly? I loved the place as a meat-eater and I still love the place now that I am vegan. Check it out!