Across the world, Marnoch (Marnoch 
) is a very rare male first name. The given name Marnoch is characteristic of Northern Europe, particularly Ireland, where it is a rare boy's name. More prevalently, Marnoch is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Marnoch | Canada, Australia, United States, United Kingdom, Thailand |
| sir john marnoch Scottish surgeon, GB (b. 1867) |
|