The Anapo (Sicilian: Ànapu) is a river in Sicily whose ancient Greek name is similar to the word for "swallowed up" and at many points on its course it runs underground. The Greek myth of Anapus is associated with it.

The river springs from the Monte Lauro in the Hyblaean Mountains (hills), on the territory of Buscemi, crossing the whole territory of Syracuse, where it flows into the Ionian Sea together with the Ciane.

Historically, its waters were used to feed the aqueduct of Syracuse, built in 480 BC by the tyrant Gelo and running for 22 kilometres (14 mi). Its waters now power the hydroelectrical station near Solarino.

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  The Diddino bridge
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  The hydroelectric station of Anapo near Solarino

• Fiume Anapo (in Italian)