Family name Sumikawa (Sumikawa 
) , in the world, is a rare cognomen. The cognomen Sumikawa is habitual in Brazil, where it is a very rare surname, Japan, and the United States. Likewise, Sumikawa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sumikawa | Brazil, Germany, Japan, China, United States |
| ryōko sumikawa (b. 1955) |
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| hiromitsu sumikawa researcher (ORCID 0000-0002-4521-5019) |
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| atsushi sumikawa film editor |
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| megumi sumikawa |
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| ayu sumikawa |
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