Family name 下泉 (下泉 
, Shimoizumi 
) , throughout the world, is quite a rare cognomen. The family name 下泉 is habitual in Eastern Asia, particularly Japan, where it is a rare surname. Very seldom, 下泉 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 下泉 | China |
| Shimoizumi | Japan |