Cognomen Avillar (Avillar 
) , throughout the world, is a rare family name. The cognomen Avillar is habitual in Philippines, where it is a rare surname, Brazil, where it is an extremely rare surname, and the United States. Very seldom, Avillar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Avillar | United States, Brazil, Mexico, Philippines |
Ana, Aztrid, Rosita, Ronald, Roldan, Rowena, George, Gloria, Lorena, Joseph, Jurlie, Nestor, Elvina, Helena, Vergie, Marilyn, Maribel, Avelino, Carlito, Rodelyn, Josepha, Narcisa, Ariane, Sharon, Mi-Ann, Margie, Jay, Mark, Roed, Luiz, Jose, Nhar, Maria, Arjay, Atani, Chris, Violeta, Pedro, Danny, Grace, Jomar, Julie, Elmer, Emily, Venus, Frank, Isaac, Marcia, Delia, and Wilbert