Rie Eto (江藤 理恵, Etō Rie, born 26 February 1988) is a Japanese female badminton player. In 2009, she won the Malaysia International Challenge tournament in the women's doubles event partnered with Yu Wakita. In 2010, she and Wakita became the runner-up at the U.S. Open Badminton Championships. In 2017, she won the mixed doubles titles at the China International Challenge tournament partnered with Tomoya Takashina.