Cryptodifflugiidae is a family of arcellinid testate amoebae.

[2] Members of this family are conopodous (with conical pseudopods) amoebae with the body in a clear, usually firm, vase-shaped test, and conical pseudopods for locomotion that extend separately from the opening of the test.

[1] The classification of the family, as of 2019:[2] The 2022 classification places Meisterfeldia and Wailesella as Arcellinida incertae sedis, leaving Cryptodifflugia as the sole member of the family.

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