Family name הילאי (Hilai 
, הילאי 
) , throughout the world, is a rare surname. The cognomen הילאי is habitual in Morocco, where it is a rare surname, Israel, where it is a very rare surname, and Indonesia. In absolute terms, it most frequently occurs in Morocco, Indonesia, and Pakistan. Also, הילאי is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hilai | Indonesia, Morocco, India, Pakistan, United States |
| הילאי | Israel |