Worldwide, Siswoyo (Siswoyo 
) is quite a rare largely masculine, but uncommonly female forename. The given name Siswoyo is habitual in South-eastern Asia, particularly Indonesia, where it is a rare largely male, but infrequently girly name. More frequently, Siswoyo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Siswoyo | Sweden, Indonesia, Malaysia, Singapore, Hungary |
|
subagyo hadi siswoyo military person and sports administrator, ID (b. 1946) |
|
| suroso hadi siswoyo ID (b. 1962) |
|
|
| tri agus siswoyo ID (b. 1970) |
|
|
| tri agus siswoyo researcher |
|