Family name Mcbay (Mcbay 
) , in the entire world, is quite a rare last name. The cognomen Mcbay is characteristic of the United Kingdom, where it is a rare surname, Canada, and the United States. Very seldom, Mcbay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mcbay | Canada, United Kingdom, Myanmar, United States, Australia |
| henry cecil mcbay American chemist, US (b. 1914) |
|
|
| susannah mcbay |
|