Family name Yokouchi (Yokouchi 
) , around the world, is a rare last name. The cognomen Yokouchi is habitual in Belgium, where it is a very rare surname, New Zealand, and Japan. Measured by absolute frequency, it is commonest in Japan, the United States, and Brazil. Also, Yokouchi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yokouchi | Germany, China, Japan, Brazil, United States |
| fumito yokouchi botanist |
|
|
| yuki yokouchi researcher |
|
|
| kazuki yokouchi researcher |
|
|
| yoko yokouchi researcher |
|
|
| hiroshi yokouchi researcher (ORCID 0000-0001-5964-0051) |
|
|
| ryoki yokouchi researcher |
|
|
| hirotaka yokouchi researcher (ORCID 0000-0001-9371-005X) |
|
|
| tomoyuki yokouchi researcher (ORCID 0000-0003-4078-2740) |
|
|
| yukako yokouchi researcher |
|
|
| tatsuhiko yokouchi researcher |
|
|
| kazuhito yokouchi |
|