Last name Johnm (Johnm 
) , around the world, is a very rare family name. The surname Johnm is habitual in Nigeria, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and the United Kingdom. Not in comparison with a country's population, it is commonest in Nigeria, China, and India. Likewise, Johnm is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Johnm | United Kingdom, India, United States, Nigeria, China |