- Danny Boy is an Irish folk song with lyrics by Frederic Weatherly written in 1910 and set to the traditional Londonderry Air melody in 1913.
- The Londonderry Air melody is a traditional Irish tune that was collected in the mid-19th century by Jane Ross.
- The song was published in 1913; the first known recording was by Ernestine Schumann-Heink in 1915, and it was later popularized by Elsie Griffin for British audiences.
- Notable later recordings include Glenn Miller and His Orchestra in 1940 and Bing Crosby in 1941, among many others.
- The lyrics speak of farewell and enduring love, often interpreted as a parent or loved one saying goodbye to a son or emigrant; the piece is widely performed on many albums by various artists and is commonly used at funerals, though it cannot be played at Mass in some contexts.
- Genre: Folk; the song has no single original album but has appeared on numerous albums and film soundtracks over the decades.
