"Rain" is a song by South Korean singer Kim Tae-yeon, a member of the South Korean girl group Girls' Generation. It was released digitally on February 3, 2016.

In January 2016, S.M. Entertainment announced that they were to launch a digital music platform called SM Station, in which SM artists would release a new song every week. "Rain" and its B-side track "Secret", were released on February 3, 2016, as the opening tracks for this project. The song "Rain" is a medium-tempo that was described to have jazz and R&B sounds. Lyrically, it uses rain as a metaphor to describe memories of past love.

The song won the first place on Seoul Broadcasting System (SBS)'s music program Inkigayo on February 14, 2016.

The music video was filmed indoors, having the concept of Taeyeon in a "room of memories", missing a past lover. It alternate between black and white scenes of Taeyeon singing alone in front of a microphone, and colored scenes of her in a flooding room. The visual was the most viewed music video on YouTube by a South Korean act in February 2016.

Credits are adapted from Naver.

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