Seo Yoon-hee (Korean: ???; born 10 November 1984) is a badminton player from South Korea.
She graduated from the SacredHeart Girl's High School, and later joined the Samsung Electro-Mechanics team.Seo played badminton at the 2004 Summer Olympics for Korea, defeating Pi Hongyan of France in the first round but losing to Petya Nedelcheva of Bulgaria in the round of 16.