Inclination III (インクリネーション・スリー, Inkurinēshon Surī) is a compilation album by Japanese singer/songwrither Mari Hamada, released on August 7, 2013, by Meldac/Tokuma Japan to commemorate the 30th anniversary of her music career.

The album compiles her singles and select tracks from 2002 to 2013, with two new songs and one re-recording.

The third release in the Inclination series, the album's discs are labeled "Disc 5" and "Disc 6"; the latter being a DVD containing a compilation of live performances.

A limited edition release includes a third disc containing a bonus track.

[3] All lyrics are written by Mari Hamada, except where indicated