Around the world, Siagian (Siagian 
) is a rare unisex given name. The first name Siagian is habitual in South-eastern Asia, particularly Indonesia, where it is a rare epicene name. Predominantly, Siagian is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Siagian | Singapore, Malaysia, Australia, United States, Indonesia |
|
bachtiar siagian Indonesian actor, ID (b. 1923) |
|
| rio sahala siagian Indonesian politician (born 1978), ID (b. 1978) |
|
|
| firman siagian Indonesian singer, ID (b. 1978) |
|
|
| loly r d siagian researcher (ORCID 0000-0002-6942-4819) |
|
|
| aris azhari siagian Indonesian political candidate, ID |
|
|
| robinson togap siagian Indonesian political candidate, ID |
|
|
| muliati siagian Indonesian political candidate, ID |
|
|
| dera siagian Indonesian actress, ID (b. 1993) |
|