Muneaki Murai (村井 宗明, Murai Muneaki, born May 30, 1973) is a Japanese politician of the Democratic Party of Japan, a member of the House of Representatives in the Diet (national legislature).

A native of the former Ōyama, Toyama and graduate of Doshisha University, Murai was elected to the House of Representatives for the first time in 2003.