In the entire world, Mackay-Lyons (Mackay-Lyons 
) is an extremely rare unknown gender forename. Much more prevalently, Mackay-Lyons is the last name as well as the forename. Parts of the name also exists independently as a last name Mackay, and a last name Lyons.
| VARIANT | COUNTRY |
|---|---|
| Mackay-Lyons | Canada |