"Promises" is a song by Scottish music producer Calvin Harris and English singer-songwriter Sam Smith. Both artists co-wrote the song with Canadian singer-songwriter Jessie Reyez, who also provided additional vocals to the song. The song's production was handled solely by Harris. It was released by Columbia Records and Sony Music on 17 August 2018. It reached number one on the UK Singles Chart on 7 September 2018, having debuted at number four two weeks earlier.
It became Harris' tenth British chart-topper and Smith's seventh. In the United States, the single became Harris' twelfth and Smith's first number-one on Billboard's Dance/Mix Show Airplay Chart in its 6 October 2018 issue. The song appears on Smith's third studio album Love Goes (2020).