Cognomen Radhakrishnan Nair (Radhakrishnan Nair 
) , in all the world, is a rare last name. The cognomen Radhakrishnan Nair is habitual in Singapore, where it is a rare surname, United Arab Emirates, and Indonesia, where it is a very rare surname. Measured by absolute frequency, it is commonest in India, Indonesia, and United Arab Emirates. Much less frequently, Radhakrishnan Nair is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Radhakrishnan Nair | United Arab Emirates, India, Indonesia, Singapore |