Sayuri Osuga (Japanese: 大菅小百合, born 27 October 1980) is a Japanese speed skater and cyclist. She is one of the few athletes who started both in the Winter Games 2002 and 2006 (in the 500 m speed skating event) and in the 2004 Summer Games (in the 500 m time trial cycling event, placing 10th). Until 2006, she was a member of the professional Sankyoseiki speedskating team. She placed first and third in the Speedskating World Cup. She holds the Japanese records in the 500 m speed skating and the 500 m time trial event. From 2006 to 2011, she was sponsored by the construction company Daiwa House Industries Co. Ltd. She retired in 2011.