希腊重装步兵（希腊语：ὁπλίται，hoplitai），是古希腊城邦的公民士兵，他们主要使用长枪并以密集方阵作战，其字源古希腊语ὁπλίται，是从ὅπλον（hoplon）衍伸而来。「hoplon」是指当时常用的希腊式大圆盾，故「hoplitai」就是指持大圆盾的步兵，之后这一词语衍伸为古希腊的重装步兵。

希腊重装步兵主要由城邦的公民组成，这些自由人需自行准备自己的武器和铠甲，故需要一定的经济基础。在许多希腊城邦中，公民都有接受基础的军事训练，需服役常备军一定时间，而当战事发生时他们都要会被征招起来。其中最令人知名的是斯巴达的公民，他们一生都在进行军事训练，并有相当强悍、恐怖的军事力量。反观斯巴达的劲敌雅典人，他们在六十岁以后就免除兵役。几乎所有古希腊名人，包括哲学家和诗人，都曾加入过希腊重装步兵。

Hoplites were citizen-soldiers of Ancient Greek city-states who were primarily armed with spears and shields. Their main tactic was the phalanx formation. The hoplites were primarily free citizens—propertied farmers and artisans—who were able to afford the bronze armor suit and weapons (estimated at a third to a half of its able-bodied adult male population). Hoplites generally received basic military training.