无齿脂鲤科为辐鳍鱼纲脂鲤目的其一科。

无齿脂鲤科下分8个属，如下：

The Curimatidae, toothless characins, are a family of freshwater fishes, of the order Characiformes. They originate from southern Costa Rica to northern Argentina. The family has around 95 species, many of them frequently exploited for human consumption. They are closely related to the Prochilodontidae.