Worldwide, 島秀昌 (島秀昌 
) is a very rare masculine forename. The given name 島秀昌 is characteristic of Eastern Asia, particularly China, where it is an extremely rare masculine name. Very seldom, 島秀昌 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 島秀昌 | China |