Cheirothrix (meaning "hand hair") is an extinct genus of marine ray-finned fish from the Late Cretaceous.

[2] It is named for its enlarged pectoral fins, which show close convergence with modern flying fish.

The following species are known: The fossilised remains of Cheirothrix lewisii were found in limestone strata in Lebanon dating back about 85 million years.

This fish was first described by James William Davis in 1887 and was named in honour of Professor E. R. Lewis of the American College in Beirut.

[5] Five specimens of Cheirothrix lewisii were found, each preserved in such detail that the fifty or so vertebrae can be counted[6] and the branching rays of the pectoral fins can be seen clearly.