Surname Muthubi (Muthubi 
) , worldwide, is a rare cognomen. The last name Muthubi is habitual in South Africa, where it is a rare surname, the United States, where it is an extremely rare surname, and India. More prevalently, Muthubi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Muthubi | United States, India, South Africa |