Nothing rivals
Souen Ramen, but whenever I find a traditional ramen shop that offers a veg version, I feel it is my duty to sample.
May Chan Ramen is new kid on the ramen block, you may remember the location as Love Saves the Day (kitschy old things), I've heard mixed reviews about the authenticity of their ramen, but it was pretty okay. Lots of veggies and an earthy broth, the noodles were not of the curly variety, but of the super long kind.
MayChan Ramen 119 2nd Avenue/St. Marks PlaceVeg option #2,
Kambi Ramen House
Franchia has ramen, but when I got wind of
these kimchi buns, I knew I had to have them.

I've only ever tasted Franchia's mochi and tea.
Hangawai's sister location offers sanctuary for the weary urban dweller in their peaceful UES teahouse. Franchia doesn't mind putting kimchi in their dumplings, pancakes, and yes-buns. Soft little taco like buns house spicy kimchi and (I thought I swore off) mock meat. Don't be fooled by the romantic lighting, these were a delight.

Daiya is taking over. Don't call yourself a vegan pizza 'less your topped w/ it.
Pala represents w/ slices of zucchini, potato, and tomato. Their gluten free crust gives new meaning to the term "gluten-free".