The proper name in the UK is "Japanese Shiba Inu" the name in the US is "Shiba Inu". In Japan they are called Shiba Inu or Shiba-ken.
I have two shiba inu. My oldest one is 13 years old now, my youngest is six. I live in the UK. There are many breeders here. I am an American but moved to the UK 10 years ago. I brought my oldest shiba over here with me. There are lots of breeders in the USA, and there are many breeders all over the world. The shiba is a very popular breed since they are small and are very clever.
Photos here:
Shiba - a set on Flickr