"Rain" is the second song released by Australian Idol series two runner-up Anthony Callea, and features on his self-titled debut album Anthony Callea (2005). It was released as a double A-side set features the song plus his recording of Simon & Garfunkel's song "Bridge over Troubled Water", which he performed on Australian Idol.

The CD single for the song was released as a three-track standard version with the B-side "Don't Tell Me". It was also available for a short time as a limited edition collector's 2CD tri-gatefold set with a second B-side, "Wanna Be the One".

"Rain" / "Bridge Over Troubled Water" debuted at #1 in Australia and remained at #1 for two weeks.

In early 2006, Swedish singer Ola Svensson covered the song and released it as his debut single. Following his participation in Idol 2005, the single debuted at #1 on the Swedish singles chart and remained there for three consecutive weeks.

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