Tynommatidae is a family of millipedes in the order Callipodida. There are about 12 genera and more than 30 described species in Tynommatidae, found mainly in western North America.

Tynommatidae was formerly considered a subfamily (Tynommatinae) of Schizopetalidae, but has been elevated in rank to family, and includes North American millipedes from the family Schizopetalidae.

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