"Truly Madly Deeply" is a song by Australian pop duo Savage Garden, released in March 1997 as the third single from their self-titled debut album (1997) by Roadshow and Warner Music. It won the 1997 ARIA Music Award for both Single of the Year and Highest Selling Single and was nominated for Song of the Year. Written by bandmates Darren Hayes and Daniel Jones, the song is a reworking of a song called "Magical Kisses" that the pair wrote together during the recording of their debut album.

Savage Garden were an Australian pop duo consisting of Darren Hayes on vocals and Daniel Jones on guitar, keyboards, and vocals; they formed in Brisbane, Queensland, in 1993. They were signed to John Woodruff's talent agency and achieved international success with their No. 1 hit singles "I Want You", "To the Moon and Back", "Truly Madly Deeply" (1997), and "I Knew I Loved You" (1999).