Yup, Oriental Top Ramen is vegan.
If you want "chicken" flavored ramen, I've found some of those soup cups in my HFS that have a mock-chicken ramen soup. I forget which brand, though. But it was pretty darn good.
Oh yea... and make sure it's Top Ramen, not the other common brand... I think Maruchan or something. Their oriental flavor has very non-vegan things in it.