Worldwide, Iest (Iest 
) is a very rare unisex given name. The first name Iest is characteristic of Eastern Asia, particularly China, where it is an extremely rare epicene name. More prevalently, Iest is the last name as well as the forename.
Ada, Lucas, Thijs, Trudy, Nynke, Hanne, Hilde, Femke, Linda, Minnie, Khairy, Robert, Roelfe, Denise, Gerrit, Tricia, Esther, Bartel, Larry, Danny, Ruwan, P K, Alex, Case, Bart, Ryan, Lynn, John, Theo, Neva, Erie, Oene, Susan, Amber, Casey, Karin, Roelf, Remco, Emilie, and Marieke