Last name Doana (Duane 
, Dwana 
, Doana 
) , all over the world, is quite a common cognomen. The last name Doana is habitual in Ireland, where it is quite a rare surname, Romania, and Cuba. Not in comparison with a country's population, it most frequently occurs in the United States, the Democratic Republic of the Congo, and Romania. More prevalently, Doana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duane | Canada, Australia, United States, United Kingdom, South Africa |
| Dwana | Canada, Indonesia, United Kingdom, United States, South Africa |
| Doana | Canada, Brazil, New Zealand, United States, Romania |
| Douane | Canada, United States, Democratic Republic of the Congo, Algeria, South Africa |