Delta Blues (デルタブルース, born 3 May 2001) is a Japanese Thoroughbred racehorse best known for winning the 2006 Melbourne Cup.^[2] He was the first Japanese horse to win the Cup. In doing so he defeated Pop Rock, another Japanese horse, also trained by Katsuhiko Sumii.

Delta Blues was virtually unknown until he had his victory in the 2004 Kikuka Sho.^[3] He defeated Heart's Cry and Cosmo Bulk then. Delta Blues placed third in the Japan Cup in November 2004.^[4]

Other runs by Delta Blues include wins in the Domestic Grade One Kikuka Sho (Japanese St Leger) in October 2004, the Domestic Grade Two Stayers Stakes in December 2005, a third in the Grade Two Hanshin Daishoten on 19 March 2006 fifth in the Arima Kinen, and 10th in the Domestic Grade One Tenno Sho (Spring) on 30 April 30.^[4]

Delta Blues won the Best Horse by Home-Bred Sire JRA award in 2004.^[5]

• Winner of the 2004 Kikuka Sho (JPN Domestic GI, Japanese St. Leger)
• Winner of the 2004 Best Horse by Home-Bred Sire JRA award.^[5]
• Winner of the 2006 Melbourne Cup
• Winner of the 2006–2007 Australian Champion Stayer

Delta Blues was sired by Dance in the Dark with the dam Dixie Splash (sire Dixieland Band). The breeder was Northern Farm.^[3]

Dance in the Dark won the Kikuka Sho (Japanese St. Leger), and was the son of "magnificent US-bred Sunday Silence, the ill-fated sire who has been unmatched in Japanese breeding history".^[11]

Australian rail operator CFCL Australia named locomotive CF4401 after the horse.^[12]

• List of millionaire racehorses in Australia
• List of Melbourne Cup winners