鸵鸟科（学名：Struthionidae），属于鸵鸟目之下的一个科。是一种大型鸟类，无法飞行是它的特征。它在始新世时代演化出来，现代在驼鸟科之下只剩下鸵鸟属（Struthio）这个分支，其他的分支皆已绝种。

Struthionidae is a family of flightless ratite birds which first appeared during the Eocene epoch. It is today represented by the sole living genus Struthio, but also contains several extinct genera. Traditionally the order Struthioniformes contain the world's ratites, but recent genetic analysis has found that the group is not monophletyic, as it paraphyletic in respect to the tinamous.