In the entire world, Tehranian (Tehranian 
) is an extremely rare unknown gender first name. Much more frequently, Tehranian is the last name as well as the forename.
Mr, Sahar, Saeed, Shima, Susan, Allen, Arian, Armin, Azahd, Bahar, Bobby, Bijan, Pouya, Rahil, Rozik, Debra, Danny, David, Diane, Grace, Linda, Jared, Sarah, Nalid, Sanaz, Majid, Ali, Ben, Mary, Mori, Mike, Sana, Sara, Alex, Aref, Aryo, Amir, Kian, Reem, Reza, Lisa, John, Nina, Faye, Fred, Iman, Mahdi, Mojan, and Nahid