Family name 睦堂 (睦堂 
) , all over the world, is a very rare cognomen. The cognomen 睦堂 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 睦堂 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 睦堂 | China |