Surname コマツ (コマツ 
, Komatsu 
, Komac 
) , all over the world, is quite a common family name. The last name コマツ is habitual in Slovenia, where it is quite a common surname, Singapore, where it is quite a rare surname, and Japan, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Brazil, Japan, and Indonesia. More frequently, コマツ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| コマツ | Japan |
| Komatsu | Brazil, China, United States, Japan, Indonesia |
| Komac | United States, France, Slovenia, Canada, Germany |
| Komatu | Brazil, India |