"Stand by Your Side" is a song by Canadian singer Celine Dion from her eighth English-language studio album, One Heart (2003). Written by Paul Barry and Mark Taylor, it was produced by Taylor and Humberto Gatica. The ballad presents Dion offering comfort and support to someone who has experienced emotional pain. It was released in the United States on 15 September 2003 as the album's third promotional single. The song reached number 17 on the US Hot Adult Contemporary Tracks chart.
On 16 September 2003, Dion's official website announced that "Stand by Your Side" had been selected as the next adult contemporary radio single in North America. Barry and Taylor, who had previously written Cher's hit "Believe", also penned this track, with production handled by Taylor and Gatica. The song is a pop ballad in which Dion reassures someone who has been deeply hurt that she will remain by their side.
Elisabeth Vincentelli of Entertainment Weekly described the track as an "inevitable power ballad". Chuck Arnold of People noted that "Even her trademark ballads feature less of the vocal histrionics that we've come to expect from Dion". A review from Billboard praised the song as "elegantly restrained and as singable and well-executed as her many previous hits", but also expressed disappointment that the label did not take more creative risks with the album.
"Stand by Your Side" debuted at number 29 on the Adult Contemporary chart on 24 September 2003, with 224 plays, becoming the second most increased AC track of the week. On 16 October 2003, it was the "Greatest Gainer" after rising to number 18. The song reached its peak of number 17 on 24 October 2003. It spent 18 weeks on the Adult Contemporary chart.
Credits adapted from the liner notes of One Heart.