'''Sunaga''' (written: 須永 or 須長) is a Japanese surname. Notable people with the surname include:
*{{Nihongo|Hideki Sunaga|須永 英輝||born 1985}}, Japanese baseball player *{{Nihongo|Sadahiro Sunaga|須永 定博||born 1934}}, Japanese rower *{{Nihongo|Yuki Sunaga|須長 由季||born 1980}}, Japanese windsurfer
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Category:Japanese-language surnames