"Stand by You" is the second single by American singer and songwriter Rachel Platten's major label debut studio album, Wildfire (2016). The song was released on September 11, 2015, by Columbia Records. The song peaked at number 37 on the Billboard Hot 100, making this her second consecutive top-40 song. "Stand by You" reached the top of the Adult Top 40 chart in February 2016.
On October 5, 2016, Platten released the lyric video for a Spanish version of the song entitled "Siempre Estaré Ahí" (Spanish for "Always Be There"), featuring Argentine singer Diego Torres.
According to the sheet music published at Musicnotes.com by Sony/ATV Songs LLC, "Stand by You" is written in the key of A major with a moderate tempo of 94 beats per minute. The song follows a chord progression of A – D – E, and Platten's vocals span from E3 to F♯5.
Mike Wass of Idolator said it is a “mood-lifting anthem”. Jason Scott of Popdust stated “Instead of projecting the message onto herself and her own journey, [...] she etches out a storyline of hope as she reaches out to her fellow underdog. Platten, who is a testament that age (sometimes) is no boundary to pop, then climbs higher on the monumental chorus. Her vocals are markedly more confident, too, exuding wisdom (and adorned with unfettered coolness). 'I’m gonna stand by you. Even if we’re breaking down, we can find a way to break through,' rings the resounding hook, an interplay between her career-defining moment and those severely aching for one." He also claimed, "The larger-than-life narrative is charming and only furthers the singer’s worthiness of being heard."