Ænima (/ˈɑːnɪmə/ AH-ni-mə) is the second studio album by the American rock band Tool. It was released in vinyl format on September 17, 1996, and in compact disc format on October 1, 1996, through Zoo Entertainment. The album was recorded and cut at Ocean Way Recording in Hollywood and The Hook in North Hollywood from 1995 to 1996. It is the first album by Tool to feature bassist Justin Chancellor, who replaced original bassist Paul D’Amour the year prior. The album was produced by David Bottrill.

The album debuted at No. 2 on the Billboard 200 chart upon its initial release, selling 148,000 copies in its first week. It was certified triple platinum by the RIAA on March 4, 2003.

The album appeared on lists of the best albums of 1996 in Kerrang! and Terrorizer. The track “Ænema” won the Grammy Award for Best Metal Performance in 1998.

In 2003, Ænima was ranked the sixth most influential album of all time by Kerrang! Rolling Stone listed the album at No. 18 on its list of The 100 Greatest Metal Albums of All Time.