Family name Sihyoung (Sihyoung 
) , all around the world, is a rare cognomen. The last name Sihyoung is habitual in Malaysia, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Sihyoung is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sihyoung | New Zealand, United States, Malaysia |