Cognomen Mathau (Mathau 
) , all around the world, is a rare surname. The cognomen Mathau is habitual in the Democratic Republic of the Congo, where it is a rare surname, Kenya, and France, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in the Democratic Republic of the Congo, Kenya, and India. Very seldom, Mathau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mathau | France, India, Democratic Republic of the Congo, United States, Kenya |
| mathau brwmffild Welsh poet |
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| dafydd llwyd mathau Welsh poet and strolling minstrel |
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