Cognomen מרקורי (Mercury 
, Mercouri 
, מרקורי 
) , globally, is quite a rare surname. The last name מרקורי is habitual in Cyprus, where it is quite a common surname, Greece, where it is quite a rare surname, and Myanmar, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Indonesia, Greece, and Cyprus. Likewise, מרקורי is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mercury | Taiwan, Greece, Myanmar, Indonesia, Philippines |
| Mercouri | United States, Greece, Australia |
| מרקורי | Israel |
| Merkouri | United States, Greece, United Kingdom, Cyprus |