Cognomen ماثر (ماثر 
, Mather 
) , throughout the world, is a common surname. The family name ماثر is habitual in Guernsey, where it is quite a common surname, Bahamas, and Isle of Man (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United Kingdom, the United States, and Australia. Very seldom, ماثر is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ماثر | Iraq, Oman, Palestinian Territory |
| Mather | Australia, Canada, United Kingdom, United States, Sri Lanka |