Family name 口郁夫 (口郁夫 
) , all over the world, is a very rare cognomen. The last name 口郁夫 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 口郁夫 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 口郁夫 | China |