is a Japanese politician who served in the House of Representatives in the Diet (national legislature) as a member of the Constitutional Democratic Party (CDP).
Tsumura is a native of Tsuyama, Okayama. He attended the University of Tokyo and received an MBA from Oxford University.
He was elected for the first time in 2003.
Tsumura ran in the 2018 DPFP leadership election, being one of the two candidates beside Yuichiro Tamaki.