Ryoko Sachi (born 1980) is a Japanese cultural anthropologist and Professor at Toyo University. Specializing in the study of Gypsy/Roma communities in Europe, particularly in France, her research explores mobility, community, religion, and memory through long-term ethnographic fieldwork. She is known for reexamining assumptions about sedentary society from the perspective of mobile communities, and her book "Living with the Gypsies in Contemporary France" received the 39th Suntory Prize for Social Sciences and Humanities. Her best-known book, "The Nomadic Way of Life: An Anthropology of Living on the Move," draws on extensive fieldwork among the Manouche and other mobile communities to portray the meanings of mobility and the forms of freedom and community that often remain unseen in settled societies.