Family name ハーディ (Hardy 
, Hardie 
, Hrdy 
) , in the entire world, is a widespread surname. The cognomen ハーディ is habitual in Guernsey, where it is a common surname, Isle of Man, where it is quite a common surname, and Mauritius (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and France. Very seldom, ハーディ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hardy | France, Indonesia, Democratic Republic of the Congo, United States, United Kingdom |
| Hardie | Australia, France, Indonesia, United States, United Kingdom |
| Hrdy | Germany, France, Canada, United States, United Kingdom |