Last name Mckenzie-Kay (Mckenzie-Kay 
) , around the globe, is a very rare family name. The cognomen Mckenzie-Kay is characteristic of Australia and New Zealand, particularly Australia, where it is a very rare surname. Parts of the name also exists independently as a last name Mckenzie, and a first name Kay.
| VARIANT | COUNTRY |
|---|---|
| Mckenzie-Kay | Australia |