Family name ชาด (Chad 
, Chat 
, Chanded ) , throughout the world, is a common surname. The cognomen ชาด is characteristic of Aland Islands, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Oman. In absolute terms, this name is the most popular in Bangladesh, India, and Malaysia. More frequently, ชาด is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chad | Australia, Bangladesh, Canada, United States, India |
| Chat | Australia, Canada, Thailand, United States, India |
| Chanded | Thailand, India |
| ชาด | Thailand |