Cognomen ييرا (Yera 
, Llera 
, ييرا) , globally, is a common family name. The cognomen ييرا is habitual in Cuba, where it is quite a common surname, Puerto Rico, where it is quite a rare surname, and Spain. Not in comparison with a country's population, it most frequently occurs in Philippines, Mexico, and Spain. Very seldom, ييرا is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yera | Mexico, Argentina, Cuba, India, Spain |
| Llera | Mexico, Cuba, Philippines, India, Spain |