Crotalus mitchellii
（重定向自Speckled Rattlesnake）
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- Common names: speckled rattlesnake, Mitchell's rattlesnake, white rattlesnake
Crotalus mitchellii is a venomous pit viper species found in the Southwestern United States and northern Mexico. It was named in honor of Silas Weir Mitchell (1829–1914), a medical doctor who also studied rattlesnake venoms. Five subspecies are currently recognized, including the nominate subspecies described here.