Last name Ladai (Ladai 
) , worldwide, is a rare family name. The last name Ladai is characteristic of Malaysia, where it is a very rare surname, India, and Thailand, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in India, Malaysia, and Nigeria. Also, Ladai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ladai | United States, Nigeria, Malaysia, Thailand, India |