Cognomen Alquen (Alquen 
) , in all the world, is an extremely rare family name. The last name Alquen is habitual in Germany, where it is an extremely rare surname, and Brazil. More prevalently, Alquen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alquen | Germany, Brazil, United States, Philippines |
| franz adam d' alquen DE (b. 1763) |
|