Supposed Former Infatuation Junkie is the fourth studio album and second internationally released album by singer-songwriter Alanis Morissette, released by Maverick Records in the United States on November 3, 1998.

Inspired from her trip to India over late 1996 and early 1997, the album cover contains phrases from five precepts, a basic code of ethics of the followers of Buddhism.

The first single from the album, "Thank U", reached the top 20 of the US Billboard Hot 100. Morissette promoted the album with worldwide touring. The album gets its name from a lyric in the track "So Pure".

Morissette expanded her musical palette on this album from Middle-Eastern spiritual music to trip-hop, moving away from the straightforward post-grunge of her previous work. She experimented with more complex and unconventional songwriting, often deviating from traditional verse-chorus structures. This approach resulted in a richer, more textured sound that incorporated new musical ideas while still maintaining her characteristic vocal style and introspective lyrics.

The album was positively received by critics and performed well commercially, breaking the record for album sales in its first week by a female artist.