Last name Jaramillo Serrano (Jaramillo Serrano 
) , around the world, is a very rare cognomen. The last name Jaramillo Serrano is habitual in Latin America and the Caribbean, particularly Ecuador, where it is a rare surname, Chile, where it is a very rare surname, and Colombia. Measured by absolute frequency, it is commonest in Ecuador, Colombia, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Jaramillo Serrano | Spain, Chile, Colombia, Ecuador |