Crotalus intermedius (common name Mexican small-headed rattlesnake[3]) is a pit viper species found in central and southern Mexico.

Klauber (1972) gives a maximum length of 57 cm (22 in), although captive specimens may grow larger.

A type locality was not given in the original paper, but "Mexico" is inferred from the title.

[2] Smith and Taylor (1950) restricted it to "El Limón, Totalco, Veracruz, Mexico".

[1][3] It is found at elevations between 2,000 and 3,200 m.[2] This species is classified as Least Concern on the IUCN Red List (v3.1, 2001).