Around the globe, Petralba (Petralba 
) is an extremely rare unknown gender first name. Much more prevalently, Petralba is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Petralba | Germany, Australia, Philippines, United States, Canada |
Ma, Rolly, Delma, Gomer, Glenn, Lorna, Lowie, Lucia, Luisa, Lurie, James, Jaime, Jeany, Homer, Irene, Waldo, Wendy, Marvin, Ma. Fe, Mervin, Shelly, Alexis, Romeo, Kevin, Cssgb, Aaron, Mia, Rex, Merv, Alan, Rose, Robi, Rene, Dale, Gene, Jose, Alecia, Joel, Eden, Iris, Maria, Micah, Mutya, Sanny, Simon, Susan, Staci, Alven, Jean, and Althea