持圆盾者（Rodeleros）或称作剑士（Espadachines），俗称「圆盾剑士」，是十六世纪早期的西班牙部队，装备着钢制盾或被称作Rodela的钢制圆盾与剑（通常是侧剑）。

原先是一个意大利人想重建剑兵军团，他们被使用强效的专业剑兵的西班牙人所采纳。除了他们的盾牌，他们经常穿着某种形式的头盔与有衬垫的金属甲胄保护着胸部。

荷南·科尔蒂斯的在美洲进行战役的部队大多数都是圆盾兵，在1520年，他的1300人部队就有1000人是圆盾兵，在1521年，有700位圆盾兵，其他的兵种如弩兵 与火绳铳兵加起来只有118位。

Rodeleros ("shield bearers"), also called espadachines ("swordsmen") and colloquially known as "Sword and Buckler Men", were Spanish troops in the early 16th (and again briefly in the 17th) century, equipped with steel shields or bucklers known as rodela and swords (usually of the side-sword type). Originally conceived as an Italian attempt to revive the legionary swordsman, they were adopted by the Spanish and used with great efficiency in the Italian Wars during the 1510s and 1520s, but discontinued in the 1530s.