Cognomen Kaidah (Kaidah 
) , around the world, is a rare last name. The family name Kaidah is habitual in Indonesia, where it is a rare surname, Morocco, and Malaysia, where it is a very rare surname. In absolute terms, it is commonest in Indonesia, Morocco, and India. Very seldom, Kaidah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaidah | South Africa, Morocco, Indonesia, Malaysia, India |