Yumiko Himei (姫井 由美子, Himei Yumiko, born February 14, 1959) is a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature). A native of Okayama, she graduated from Okayama University with a master's degree. She was elected to the House of Councillors for the first time in 2007 after serving in the assembly of Okayama Prefecture for two terms since 1999.