Cognomen Sidhe (Sidhe 
) , all over the world, is a rare last name. The surname Sidhe is habitual in India, where it is a very rare surname, Germany, where it is an extremely rare surname, and Canada. In absolute terms, it is the most numerous in India, the United States, and Germany. Also, Sidhe is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sidhe | Philippines, United States, Germany, India, Spain |