Vipera (Echidna) avicennae is a taxonomic synonym that may refer to:
- Cerastes cerastes, a.k.a. the desert horned viper, a venomous viper species native to the deserts of Northern Africa and parts of the Middle East.
- Cerastes vipera, a.k.a. the Sahara sand viper, a venomous viper species found in the deserts of North Africa and the Sinai Peninsula.
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