"There are an estimated 100,000 family names in Japan ...In ascending order, the most common Japanese surnames today:"
10. Saito
9. Kobayashi
8. Nakamura
7. Yamamoto
6. Ito
5. Watanabe
4. Tanaka
3. Takahashi
2. Suzuki
1. Sato"
Source:
The 10 most common surnames in Japan (and their meanings)
By Philip Kendall
August 26th 2013
Japan Today