Surname Sawako (Sawako 
) , in all the world, is a very rare last name. The family name Sawako is characteristic of Spain, where it is a very rare surname, Thailand, where it is an extremely rare surname, and China. Much more frequently, Sawako is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sawako | Japan, China, Singapore, United States, Brazil |
Abe, Hirano, Matsuno, Shimizu, Kuronuma, Tsuzuki, Hayashi, Okamoto, Yoshida, Morikawa, Sugimoto, Nakamura, Ishikawa, Ishihara, Watanabe, Yamamoto, Yamauchi, Yokoyama, Matsumoto, Kobayashi, Takahashi, Nishikawa, Nonaka, Nakano, Tanaka, Kawase, Ito, Ono, Mori, Sato, Sumi, Chan, Kato, Kono, Kubo, Ward, Yamaguchi, Saito, Rimar, Graff, Nitao, Hirai, Inoue, Ishii, Otaki, Sadako, Sasaki, Suzuki, Chang, and Williamsen