Surname Swires (Swires 
) , worldwide, is a rare family name. The cognomen Swires is habitual in the United Kingdom, where it is a rare surname, the United States, where it is a very rare surname, and New Zealand. Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Swires | Canada, United Kingdom, United States, South Africa, Australia |