"I'll Remember You" is a song recorded by Japanese-American singer-songwriter Ai, released on July 18, 2007, by Island Records and Universal Sigma. A midtempo recording, "I'll Remember You" was used in a series of commercial tie-ins, peaking at number 13 on the Oricon Singles Chart upon its release.
Ai teased "I'll Remember You" at the 2007 MTV Video Music Awards Japan, performing the song live during the ceremony. A physical maxi single was announced for release in July, with "I'll Remember You" serving as an A-side alongside "Brand New Day", which was released to digital platforms as a promotional single in June.
Two variants of "I'll Remember You" / "Brand New Day" were released. The standard edition includes the two A-side singles alongside karaoke versions of each song, a total of four tracks. A limited-edition version included a bonus DVD with the music videos for "I'll Remember You" and "Brand New Day".
"I'll Remember You" was used in a 2007 campaign by Audio-Technica. Digital music media provider Music.jp used "I'll Remember You" in a series of commercials.
Ai performed "I'll Remember You" for the first time prior to its release at the 2007 MTV Video Music Awards Japan. She also performed the song at the Live Earth charity concert in Tokyo. Holding a free concert outside the Tokyo Metropolitan Government Building, she performed "I'll Remember You" as part of the Beijing Olympics campaign.