The Sicilian Defence is the eleventh and final studio album by The Alan Parsons Project, released in 2014. It was named after the Sicilian Defence, a famous chess opening. Having been released 24 years after the split of the band, it has so far only been available as part of the eleven-CD box set The Complete Albums Collection. In December 2023, it was made available for download purchase and on streaming sites. The album is the Project's official eleventh album instead of Freudiana, as the Project would split during its production, but feature most of the Project's personnel, making it the "unofficial" Project album.