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