The Ilha do Ameixal Area of Relevant Ecological Interest (Portuguese: Área de Relevante Interesse Ecológico Ilha do Ameixal) is an area of relevant ecological interest in the state of São Paulo, Brazil.

The Ilha do Ameixal Area of Relevant Ecological Interest (ARIE) lies in the municipality of Peruíbe, São Paulo.

[2] The ARIE covers Ameixal island in the Una do Prelado River near its mouth on the Atlantic Ocean.

[1] The Ilha do Ameixal Area of Relevant Ecological Interest was created by presidential decree 91.889 of 5 November 1985.

It is administered by the federal Chico Mendes Institute for Biodiversity Conservation (ICMBio).