Smith is very popular across the board; the most popular last name in Australia, the US, the UK, New Zealand and Canada.

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The most common surname in Malaysia and Singapore is Tan, while Nguyen is the most popular in Vietnam.

Kim is the most common surname in North Korea and South Korea, as well as Kazakhstan and Uzbekistan.

In South Korea, one in five residents has the surname Kim. And in Vietnam, one in every four residents has the last name Nguyen.

In China, Wang is shared by an estimated one in every 13 residents.

NetCredit senior content writer Barbara Davidson said the study of surnames across the world shows a unique guide to the history of human civilisation.

“Historians can form critical insights into culture and settlement patterns, genealogists can trace ancestral roots, and regular people can develop their sense of world-historical identity.

“Today, humans are spread across 90 per cent of the Earth, and human society is more culturally diverse than at any other point in history. The most common last names in every country remind us of our shared origins, and a time when the world wasn’t so big.”