Around the globe, Alsua (Alsua 
) is an extremely rare unknown gender first name. More prevalently, Alsua is the last name as well as the forename.
Al, James, Jenny, Julia, Julie, Justo, Nilda, Norma, Nelly, Hilda, Felix, Martha, Manuel, Matias, Monica, Miguel, Silvia, Stella, Alicia, Alison, Angela, Arnold, Diego, David, Ramon, Pablo, Ana, Ann, Mary, Matt, Sara, Anne, Rosa, Luis, Jose, Juan, Amelia, Emma, Oier, Maria, Mario, Marco, Selva, Allen, Angel, Amaia, Berta, Brian, Olga, and Carlos