Cognomen 大川 (大川 
, Okawa 
) , in the world, is quite a common last name. The cognomen 大川 is characteristic of Japan, where it is a rare surname, Singapore, and China. Measured by absolute frequency, this name is the most popular in China, Japan, and Brazil. More frequently, 大川 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 大川 | China |
| Okawa | China, United States, Brazil, Japan, Indonesia |
| 大川 功 Japanese businessman, JP (b. 1926) |
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| 大川和彦 Japanese announcer, JP (b. 1947) |
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| 大川陽子 actor, JP (b. 1964) |
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| 大川敦子 JP (b. 1968) |
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