Cyanophrys longula, the long-winged greenstreak, is a butterfly in the family Lycaenidae.

The species was first described by William Chapman Hewitson in 1868.

It is found in Mexico, with strays recorded from south-eastern Arizona.

Adults are on wing from March to May and from August to December in Mexico.

The larvae feed on a wide range of plants, including species from the families Asteraceae and Verbenaceae.