Globally, کالو (Kalo 
, Kahlo 
, کالو) is a common unisex forename. The first name کالو is characteristic of India, where it is quite a rare gender-neutral name, Gambia, where it is quite a rare male name, and Oman, where it is quite a rare dominantly boy's, but infrequently girly name. In absolute terms, it is the most numerous in Southern Asia, particularly India, Pakistan, and Bangladesh. Also, کالو is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kalo | Hungary, Madagascar, Bangladesh, Pakistan, India |
| Kahlo | Saudi Arabia, United States, Pakistan, India, Germany |