Surname דינאי (Dinai 
, דינאי 
) , across the world, is a rare cognomen. The surname דינאי is characteristic of Israel, where it is a rare surname, Indonesia, where it is a very rare surname, and Nicaragua. Measured by absolute frequency, it is the most numerous in Indonesia, Israel, and India. More frequently, דינאי is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dinai | Nigeria, Brazil, Indonesia, India, Mexico |
| דינאי | Israel |