Family name Flaca (Flaca 
) , around the world, is a rare last name. The cognomen Flaca is habitual in Latin America and the Caribbean, particularly the Dominican Republic, where it is a rare surname, Colombia, and Argentina, where it is a very rare surname. In absolute terms, this name is the most popular in Colombia, the Dominican Republic, and Spain. Also, Flaca is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Flaca | Colombia, Argentina, Dominican Republic, Spain, Guatemala |