Family name Kavanach (Kavanach 
) , all over the world, is a very rare cognomen. The surname Kavanach is characteristic of Ireland, where it is a rare surname, Australia, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, this name is the most popular in Ireland, Australia, and the United States. Much less frequently, Kavanach is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kavanach | Canada, United States, Ireland, Spain, Australia |