Surname 土圭 (時計 
, 土圭 ) , globally, is a very rare family name. The cognomen 土圭 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 土圭 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 土圭, 時計 | China |