鲤齿目（学名：Cyprinodontiformes），又称鳉形目，为辐鳍鱼纲的其中一目。

本目其下分为2个亚目10个科：

Cyprinodontiformes /ˌsaɪprᵻnoʊˌdɒntᵻˈfɔːrmiːz/ is an order of ray-finned fish, comprising mostly small, freshwater fish. Many popular aquarium fish, such as killifish and live-bearers, are included. They are closely related to the Atheriniformes and are occasionally included with them. A colloquial term for the order as a whole is toothcarps, though they are not actually close relatives of the true carps – the latter belong to the superorder Ostariophysi, while the toothcarps are Acanthopterygii.