Cognomen Siphonekham (Siphonekham 
) , in all the world, is a very rare family name. The cognomen Siphonekham is characteristic of Northern America, particularly the United States, where it is an extremely rare surname, and Canada. Very seldom, Siphonekham is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siphonekham | United States, Canada |