Surname 沼川 (沼川 
) , around the globe, is a very rare last name. The cognomen 沼川 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 沼川 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 沼川 | China |
| 沼川洋一 Japanese politician, JP (b. 1931) |
|