草原响尾蛇（学名：Crotalus viridis）亦称西部响尾蛇，是美国西部分布相当广的一种响尾蛇。

• Prairie Rattlesnake - Crotalus viridis at Herpnet.net, Reptiles and Amphibians of Iowa. Accessed 15 June 2007.

Crotalus viridis (Common names: prairie rattlesnake, western rattlesnake, Great Plains rattlesnake, and others) is a venomous pit viper species native to the western United States, southwestern Canada, and northern Mexico. Currently, two subspecies are recognized, including the nominate subspecies described here.