"Sweet Afton" is a lyrical poem describing the Afton Water in Ayrshire, Scotland. It was written by Robert Burns in 1791.^[1] The poem was first published as a song in the Scots Musical Museum (1787-1803) and this is the best known version as sung throughout Scotland. The poem is also known as a song set to music in 1837 in the USA by Jonathan E. Spilman; however, this is not the melody sung in Scotland.^[2]

"Sweet Afton" contains a number of monosyllables, which contribute to a gentle, soothing rhythm. It can be seen as a hymn for peace. The poem is in the metre 11 - 11 - 11- 11. The University of South Carolina uses the 1837 Spilman melody for their alma mater, "We Hail Thee Carolina".

The song is sung by Mary Bennet (played by Marsha Hunt) in the 1940 film version of Pride and Prejudice.^[3] It is also mentioned in Chapter IX of MacKinlay Kantor's Pulitzer Prize-winning novel Andersonville (1955). In the Andy Griffith Show episode “Mayberry Goes Hollywood” (1961) a citizen of Mayberry sings “Sweet Afton” to serenade a visiting Hollywood film producer.

In the town of New Cumnock in East Ayrshire there is a bridge across Afton Water on the A76 upon which there is a plaque commemorating Robert Burns and his poem.

The River Afton of New Cumnock gives its name to Glen Afton through which the river runs, which has connections with William Wallace, Robert the Bruce, Mary Queen of Scots (1568), and Robert Burns. The Wallace seal attached to the Lubeck Letter of 1297 gives substance to the theory that Wallace's father was from Kyle Regis (this area) and a rock formation "up the glen" is named Castle William, supposedly after the Scottish patriot's fortification.

• Digitised copy of Afton water in James Johnson's Scots Musical Museum, printed between 1787 and 1803, from National Library of Scotland. JPEG, PDF, XML versions.