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