Cognomen Letho (Letho 
) , worldwide, is a rare family name. The last name Letho is habitual in Bhutan, where it is quite a common surname, Australia, where it is a rare surname, and Norway. In absolute terms, it is the most numerous in Bhutan, South Africa, and Australia. Also, Letho is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Letho | Bhutan, Australia, France, South Africa, India |
| jussi letho person identified in the Museu da Pessoa collection, FI (b. 1926) |
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| vidar letho Norwegian actor and musician (b. 1974) |
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| kasimir letho |
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