Family name Ansiau (Ansiau 
) , all over the world, is a very rare cognomen. The surname Ansiau is characteristic of Belgium, where it is a rare surname, France, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Very seldom, Ansiau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ansiau | United Kingdom, France, Belgium |
|
|
henri ansiau Belgian politician (1810-1879), BE (b. 1810) |
|