Around the world, Mcilvaine (Mcilvaine 
) is an extremely rare unknown gender forename. Much more frequently, Mcilvaine is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mcilvaine | Canada, Australia, United States, United Kingdom, Venezuela |
| robinson mcilvaine American diplomat (1913-2001), US (b. 1913) |
|
|
| graham mcilvaine American volleyball player, US (b. 1992) |
|