Around the world, Alfonseca (Alfonseca 
) is an extremely rare epicene first name. More prevalently, Alfonseca is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Alfonseca | Mexico, United States, Dominican Republic, Spain, Bolivia |
|
simón alfonseca castro Dominican baseball pitcher in the Colorado Rockies organization of Major League Baseball, DO (b. 1988) |
|
Ms, Maria, Mayra, Mabel, Sonia, Alexi, Alina, Analy, Angel, Ariel, Ambar, Carol, Cesar, Karen, Karla, Kenya, Kevin, Kiara, Paula, Pablo, Paola, Petra, Obie, Omar, Emma, Erik, Ana, Ari, Luz, Mary, Mike, Alex, Alba, Alma, Andy, Abel, Pedro, Aida, Rafa, Raul, Rosa, Dave, Gina, Luis, Jose, Joel, Juan, Tony, Casa, and Piikchuu