草螟科（学名：Crambidae）属于鳞翅目。它们外形差别很大，有些亚科的品种栖息在草地上，很不起眼，另一些亚科的品种色彩艳丽。

有些分类中，草螟科被列为螟蛾科的一种子科。

The Crambidae are the grass moth family of Lepidoptera (butterflies and moths). They are quite variable in appearance, the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies include brightly coloured and patterned insects which rest in wing-spread attitudes.