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 | Australia, Canada, United Kingdom, South Africa, United States |
| Dwana | Indonesia, Canada, United Kingdom, South Africa, United States |
| Doana | Romania, Canada, United States, Brazil, New Zealand |
| Douane | Democratic Republic of the Congo, South Africa, Canada, United States, Algeria |