Globally, Kostalova (Kostalova 
) is an extremely rare unknown gender first name. Much more frequently, Kostalova is the last name as well as the forename.
Ms, Natasa, Nikola, Eliska, Emilie, Helena, Zuzana, Zdenka, Martina, Renata, Marcela, Beatriz, Daniela, Michaela, Katerina, Katarina, Kristina, Doubravka, Veronika, Marketa, Romana, Klarka, Andrea, Sysa, Dana, Jana, Nada, Nika, Maria, Sarka, Alena, Aneta, Klara, Petra, Radka, Lenka, Linda, Lucie, Jitka, Viera, Monika, Simona, Miroslava, and Alexandra