"I'm with You" is a song by Canadian singer-songwriter Avril Lavigne from her debut studio album Let Go (2002). It was released to radio as the third single from the album on November 18, 2002, by Arista Records. The song was written by Lavigne and the production team the Matrix, which consists of Lauren Christy, Scott Spock, and Graham Edwards. Production on the song was helmed solely by the Matrix. According to Lavigne, the song was inspired by feelings of loneliness she experienced over being single. The song reached number four on the US Billboard Hot 100 and reached the top 10 in nine other countries, including Ireland, Italy, and New Zealand, peaking within the top five in these regions. In the US, the song topped two Billboard listings: the Adult Top 40 and the Mainstream Top 40. "I'm with You" received radio and television airplay in Australia, but it was not officially released there. The track was nominated for several awards following its release, winning two ASCAP Awards, a BMI Pop Music Award, and a SOCAN Award. It was the second Lavigne song to be nominated for a Grammy in the categories Song of the Year and Best Female Pop Vocal Performance at the 46th Annual Grammy Awards.