"Mercy" is a song by Canadian singer and songwriter Shawn Mendes.
The song was co-written by Mendes with Ilsey Juber, Danny Parker and Teddy Geiger, with the latter handling the song's production with Jake Gosling.
The song was released on August 18, 2016, through Island Records as the third promotional single, and later as the second single on October 18, 2016, from Mendes' second studio album, Illuminate (2016).
"Mercy" is written in the key of E minor with a common time tempo of 144 to 152 beats per minute.
On September 21, 2016, was released a music video, directed by Jay Martin.