Surname 拉迪 (Ruddy 
, Lardy 
, Latil 
) , around the globe, is a common cognomen. The family name 拉迪 is characteristic of Guadeloupe, where it is quite a common surname, Nicaragua, and Ireland. Not in comparison with a country's population, the name is most common in France, the United States, and the United Kingdom. More frequently, 拉迪 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruddy | France, Bolivia, United States, Indonesia, Democratic Republic of the Congo |
| Lardy | France, United States, United Kingdom, Indonesia, Democratic Republic of the Congo |
| Latil | Canada, France, Venezuela, United Kingdom, United States |
| 拉迪 | China |