Jaegal Sung-yeol (Korean: 제갈성렬; Hanja: 諸葛成烈; born 24 March 1970 in Uijeongbu, Gyeonggi Province) is a former speed skater from South Korea. At the 1992 Winter Olympics, he finished 12th in the 500 m long track speed skating.

• Skateresults.com
• Evans, Hilary; Gjerde, Arild; Heijmans, Jeroen; Mallon, Bill; et al. "Jegal Seong-Ryeol". Olympics at Sports-Reference.com. Sports Reference LLC. Archived from the original on 2020-04-17.